Best Big Time Alarm Clocks

More on Digital Alarm Clock, with Wooden Electronic LED Time Display, 3 Alarm...

• 【Dual plus Alarm Setting】- Updated from dual alarms to three alarms. You can either set two or three alarms to better WAKE you up. One for you and the other for your families. Forever Say no to delay. Also, it allows you to set weekday mode, which will ring only on Monday to Friday.
• 【Stylish Wooden Design for Décor】- This must be the most delicate alarm clock you’ve ever seen. It’s not only a clock, but also a great decoration for your bedroom or living room. Stylish appearance and multiple functions make it suitable as a gifts for kids or anyone who appreciates style and functionality.
• 【Multiple Brightness Level Adjustable】- Allows you to adjust from low to high brightness. It’s user friendly at night, which won’t be too harsh for your eyes.
• 【Temperature and Humidity Detect】- with temperature and humidity sensor, it can monitor the indoor temperature and humidity. Just like a companion to protect your health.
• 【Power Cord Operated】- This clock is operated by USB to barrel power cord. ***NOT Batteries operated***

More on SHARP Digital Alarm with AccuSet - Automatic Smart Clock, Never Needs Setting...

• AccuSet Automatic Time Set - The clock is pre-programed with the time so there is no need to worry about setting buttons. Just select your time zone at the bottom of the clock and turn on the DST if applicable. Plug the clock in to an approved electrical source.
• Quick Daylight Savings Time (DST) Adjustment - For quick adjustment for Daylight Savings Time, slide the DST switch at the bottom of the clock to ON to add and hour (+1 hr.). For Standard Time slide switch to OFF to subtract an hour (-1 hr.)
• High/Low Dimmer control - Adjust the display brightness to your liking and your room with the high or low dimmer control.
• Back up Battery -The button cell battery CR2032 is pre-installed and is used for the back up battery and the time settings. It is in a screw-secured cabinet at the bottom of the clock. This battery will last for several years.
• Time Zone Selection - The default time zone is Eastern Standard Time. Before you plug in the set your time zone on the bottom of the clock.

More on Digital Projection Alarm Clocks for Bedrooms - Large LED Display, 180°...

• Plastic
• Imported
• 🥰180° 𝗥𝗢𝗧𝗔𝗧𝗔𝗕𝗟𝗘 𝗦𝗪𝗜𝗩𝗘𝗟 𝗣𝗥𝗢𝗝𝗘𝗖𝗧𝗢𝗥✨--Designed with 180° rotatable swivel projector and projects ultra-clear time onto wall or ceiling within the optimum projection distance 1.6-9.8ft, allowing you easily read it even lying on the bed. For more clarity of projection image, you can rotate focus ring🔄 of the ceiling clock by proper angle. Press Projection Mode button to flip the orientation of upside down projection images so the numbers are always right-side-up.
• 🆕𝗨𝗟𝗧𝗥𝗔 𝗖𝗟𝗘𝗔𝗥 𝗣𝗥𝗢𝗝𝗘𝗖𝗧𝗜𝗢𝗡 𝗪𝗜𝗧𝗛 𝟱-𝗟𝗘𝗩𝗘𝗟 𝗔𝗗𝗝𝗨𝗦𝗧𝗔𝗕𝗟𝗘 𝗕𝗥𝗜𝗚𝗛𝗧𝗡𝗘𝗦𝗦 𝗗𝗜𝗠𝗠𝗘𝗥--The projection part has a dimmer switch with 5 levels, which can be adjusted to your preference. This is helpful for people who are sensitive to light at night and want to reduce the brightness of the bright projection shines on the ceiling.
• ⏰ 𝗗𝗨𝗔𝗟 𝗔𝗟𝗔𝗥𝗠𝗦 𝗪𝗜𝗧𝗛 𝗖𝗢𝗡𝗩𝗘𝗡𝗜𝗘𝗡𝗧 𝗕𝗜𝗚 𝗦𝗡𝗢𝗢𝗭𝗘 𝗕𝗨𝗧𝗧𝗢𝗡--The projection clock can be set two separate alarms for couples with different routines or a backup for waking up heavy sleepers. The snooze button 💤 is in a convenient central location to turn off alarm to get extra 9 mins sleep before alerting you again.
• 🔊𝗔𝗗𝗝𝗨𝗦𝗧𝗔𝗕𝗟𝗘 𝗔𝗟𝗔𝗥𝗠 𝗩𝗢𝗟𝗨𝗠𝗘--The alarm volume of this loud alarm clock can be adjusted to your preference by pressing "V+" or "V-" buttons, with levels ranging from 1-5. The incremental increase in volume ensures that the alarm sound gradually gets louder, making it less jarring to wake up to.
• 🔆𝟳" 𝗟𝗔𝗥𝗚𝗘 𝗦𝗨𝗣𝗘𝗥-𝗖𝗟𝗘𝗔𝗥 𝗧𝗜𝗠𝗘 𝗗𝗜𝗦𝗣𝗟𝗔𝗬 𝗔𝗟𝗔𝗥𝗠 𝗖𝗟𝗢𝗖𝗞 𝗪𝗜𝗧𝗛 𝟱-𝗟𝗘𝗩𝗘𝗟 𝗗𝗜𝗠𝗠𝗘𝗥--7" ultra-large display of the ceiling projection alarm clock enables you to easily view the time even across the room even with glasses👓 off and perfectly for elders. You can dim the display if you are sensitive to light at night by repeatedly pressing "DIMMER" switch with 5 levels, which is also good for protect your eyes.
• 🔌𝗖𝗢𝗥𝗗𝗘𝗗 𝗖𝗟𝗢𝗖𝗞/𝗕𝗔𝗧𝗧𝗘𝗥𝗬 𝗕𝗔𝗖𝗞𝗨𝗣/𝗨𝗦𝗕 𝗖𝗛𝗔𝗥𝗚𝗜𝗡𝗚 𝗣𝗢𝗥𝗧--This electric alarm clock should always connect with the AC Power for all functions work. It also offers memory backup functionality using 2x AAA batteries (NOT included) to remember the time and clock settings. (When power outage, you don't need to set the time and alarm again.) Besides, the plug-in clock has a built-in 5V/1.0A USB output interface, allowing you to charge Android and iOS cellphones and tablets while asleep.
• 🎁𝗘𝗔𝗦𝗬-𝗧𝗢-𝗦𝗘𝗧&𝗦𝗧𝗬𝗟𝗜𝗦𝗛--This projection clock's user-friendly and intuitive buttons make setting the time a breeze, even for tech novices like children or seniors. By hold pressing the "DST" button, the DST function is activated. And the time format can be easily customized by long-pressing the 12/24H button to suit individual preferences. This clock makes for a practical and stylish gift that can be cherished by all your loved ones on special occasions.
• Projection distance and its ceiling size: 3.28ft = 9x 3.54 inch; 6.56ft = 18.9x 7.09 inch; 9.84ft = 25.59x 10.24 inch

More on DreamSky Wooden Digital Alarm Clocks for Bedrooms - Electric Desk Clock with...

• Basic Wooden Alarm Clock with Easy to See Big Numbers: the 1.8 inches large numbers on this 6.6 inches compact alarm clock are super easy to read from across the room, no complex setting, easy to program, which is an ideal desk clock for kids, seniors, the elderlys and adults.
• 5 Level Dimmable Brightness Dimmer: the display brightness of this digital clock is 5 level adjustable plus an OFF option, which is vision friendly, no glaring light at night yet still bright enough by day. Time format is standard time and military time (12/24HR) switchable.
• Battery Only Operates Alarm for Power Failure: the battery function for this bedroom alarm clock will trigger the alarm during power outage, take no risk of missing your vital schedule. The display won't light up with battery power only. Requires 2 AAA Alkaline batteries (not included).
• Adjustable Alarm Volume with Snooze Button on the Top: the alarm volume is 5 level customizable from very low for light sleepers to extra loud for heavy sleepers adults. Alarm lasts for 2 minutes and a dedicated Snooze button on the top helps you get extra 9 mintues sleep easily.
• Plug in Alarm Clock with USB Charger: the bedside clock runs on electricity for normal time display and the AC adapter is supplied. A handy USB Charging Port helps you charge your smart devices and other gadgets without looking for your adapter and other outlet.
• Bedroom Accessories Wood Décoration: the concise and clean LED digits on the sleek wooden face make up this minimalist wooden digital clocks for living room décor which is also perfect for your TV stand and cable box while serves as a decent and beautiful gifts for your loved one.
• Simple Alarm Clock with Manual DST: the table clock comes with a manual DST button that would save your time when spring or fall time arrives, no setting hassle, just press the DST button, DST shows up on the display, time goes on hour forward, DST off, time goes one hour back.
• IMPORTANT: please note that the electric alarm clock is NOT battery powered and requires adapter for normal performance. Battery only operates alarm during power outage.

More on Digital Alarm Clock, with 5.5" Large LED Time Display, Adjustable Alarm...

• 【Upgraded Big Screen Display】- Experience the luxury of a 5.5" High Resolution Digital Alarm Clock that spells out the time, date, and temperature clearly. The illuminated LED digits ensure visibility even from a distance, allowing you to effortlessly check the time without straining your eyes.
• 【Adjustable Alarm Brightness】- With our revolutionary 6 Brightness Levels ranging from 5% to 100%, you have complete control over the alarm clock's brightness. No need to worry about the brightness being too intense to disrupt your sleep or too dim to read the time. Find the perfect balance that suits your preferences.
• 【Adjustable Alarm Volume】- Say goodbye to jarring wake-ups! Our alarm clock offers 8 adjustable sounds that can be set between 30-85 DP, allowing you to wake up to your preferred level of audio stimulation. And with the easy snooze function, simply press the top button for an extra 9 minutes of snooze.
• 【Easy Operate】- Designed for simplicity, our alarm clock features a big and clear display, 12-hour / 24-hour format, and provides indoor temperature information. It's perfect for kids, seniors, and the elderly, guaranteeing a stress-free experience when setting the time and alarm.
• 【USB Charging Port and Battery Backup】- Conveniently charge your smartphones, tablets, or other 5V electronic devices with the built-in USB charging port. The clock also features a backup button battery, ensuring that it keeps the time even during power outages. Please note that the clock must be powered using the power cable.

More on DreamSky Small Digital Alarm Clock for Bedroom, Large Big Numbers Display...

• Large Display Electric Alarm Clock with Brightness Dimmer: Corded plug in clock with compact streamline design yet large number display. 2 inches jumbo illuminated LED digits ensure the time is easy to see even for impaired vision people. The brightness dimmer allows you set the brightness of display, needless worry the brightness, either too bright thus affecting your sleep or too dark to read time.
• Adjustable Alarm Sound: Single alarm setting with 9 minutes snooze. No harm beep alarm sound can be set from 30-90 DP as person preference. Needless worry the alarm sound, either too loud thus frightening you or too low to wake you up from deep sleeping. One simple ON/OFF button allows you disable the alarm on weekend.
• USB Charging Port: Convenient USB port allows you to charge your smartphone or other electric device without plug in wall. handy, convenient and organized.
• Easy Operation Clock: Intuitive setting button, experience zero stress when setting the time or alarm. Easy for kids, seniors and the elderly.
• Outlet Powered with Memorized Battery Backup : Plug in to power the clock with the included DC adapter . 2 x AAA batteries (not included) needed for storing time and alarm settings in case of power outage. With backup battery power source only, the screen will go blank and alarm will not sound.

More on Sharp Big Bang Super Loud Alarm Clock for Heavy Sleepers, 6 Extremely Loud...

• Extra Loud Alarm Clock - The Sharp Big Bang is the loudest alarm clock for kids of all ages. The up to 115db extremely loud alarm clock allows you to adjust the volume AND tone of the alarm sounds to create the perfect custom noise to wake you up!
• 6 Extremely Loud Wake up Sounds – Adjust the volume and tone of the six different unique sounds that will get you out of the bed and ready to start your day! Choose from Rooster, Bugle, Nagging Mom, Jackhammer, Siren, Loud Beep – Up to 115db Alarm Volume
• D𝘂𝗮𝗹 Extra Loud A𝗹𝗮𝗿𝗺s with Custom Snooze Functionality: Allows you to set two separated alarms easily especially handy for couples or roommates who keep different schedules. When the alarm goes off, touch the snooze button on top of the clock to give you a few more minutes of sleep. Snooze can be customized to a time of your choosing from 1-59 minutes. If you don’t adjust the custom snooze, the default snooze time is 9 minutes.
• 3 Step Dimmer Control: 3-Level Adjustable Brightness -- The digital clock provides 3 levels of brightness (Off, Low, High) allowing you to select the most comfortable brightness for your room.
• Electric Powered with “No Worry” Battery Backup: Plug into standard household wall outlet (This alarm clock is compatible with 110V/120V power outlets) to power the Sharp Big Bang Extremely Loud Alarm Clock. Battery Backup (Requires 2 x AAA batteries (not included)) This clock is electric operated; The battery backup is used for storing the time and alarm settings if the power is interrupted. During battery backup the clock’s display will not be lit. Once the power is restored the display will re-light.

More on 7 Inch Digital Clock with Day and Date for Elderly Alzheimer's Dementia Clock...

• Easy to Read:The digital clock for elderly has a 7-inch display that clearly displays the time, date, day of the week, four time periods of the day [morning, afternoon, evening, night], and displays the ICONS of each time period, non-abbreviated large font helps the elderly easily read the time
• Multi-Displays:The large number digital clock has three display modes, Calendar day clock, Elderly clock and Colorful clock. Can set 4 color font display, 5 alarms and 3 medicine reminders, support 8 languages, and can be used as a photo frame with USB flash drive (not included)
• Automatic Brightness Function:The digital clock with date and day of week can be automatically adjusted or manually set the display brightness, and the manual mode can set three brightness levels: high, medium, and low. The auto-adjust mode dims at 7pm and brightens at 7am during the day
• Simple Settings:The large display digital clock for elderly with day and date comes with an easy-to-read instruction manual to help users easily complete the setup process, suitable for living room, dining room, bookshelf, tabletop, etc. It's a bedside clock, desk clock and wall clock
• Customer Service:We are committed to providing our customers with better clock products and services, and our customer service staff will be more than happy to respond to any questions you may have and will answer you within 24 hours

More on Mpow Digital Alarm Clock for Bedrooms, Large Numbers, Easy to Set Digital...

Mpow Digital Alarm Clocks for Bedrooms Heavy Sleepers Adults Seniors Kids - An Easy to Use Bedside Clock for Daily Use "I" am different from others! Special Curved Screen, Eye Catching and More Practical - A curved monitor mimics your eyes' curvature for a more confortable viewing experience and less eye strain. In fact, Research Gate reports that a Harvard Medical School study found curved screens are better at reducing eye strain and blurred vision and improving focus compared to regular screens. 5" Large Display & Large Numbers, Brightness Improved by 30%, Super Easy to Read - This digital clock for heavy sleepers is easy to read regardless of distance or visual acuity thanks to its large LED display(5.75-inch). It's lightweight and doesn't take up much space. Super Easy to Set - This should be the easiest alarm clock ever to operate! With just 3 labelled buttons on the top, you will hardly need instructions to operate this digital alarm clock. One More an Adapter for the Same Money - Our bedroom alarm clock comes with an adapter, while other sellers usually only include an alarm clock, so it is more cost-effective to select Mpow digital alarm clock. Explore More Features of Mpow Digital Alarm Clock for Heavy Sleepers Adults/Kids/Seniors ✅ Quality Assurance and Best Customer Service ✅ Upgraded Brightness, Special Curved Screen, Non-slip Design ✅ 5'' Large Display + 2'' Clear Digit - Easy to Read Regardless of Distance ✅ 6-Level Brightness to Freely Adjust Screen Brightness ✅ 3 Alarm Sounds for Your Favourite Sound ✅ 2-Level Volume for Heavy or Light Sleepers(Can Also Turn off the Sound Completely) ✅ Super Easy to Set - Without a Detailed Review of Manuals ✅ 9mins Snooze - Bigger Snooze Button to Get Extra 9mins Sleep ✅ Comes with an Adapter, More Cost-effective ✅ Battery Backup Memory Function - Avoid the Trouble of Repeating Settings When Powered Off ✅ 12/24H Switchable for Different Habits of Reading Time(NOTE:Short Press "-" to Switch 12/24 Hour Time Display Format) ✅ Compact Design & Save Space ✅ Unique Gift for Seniors, Kids, Heavy Sleepers, Best Gift for Back to School Never Worry About After-Sales, Buy with Confidence! 2 Years Super Long Warranty Free Returns and Exchange Within 45 Days Best Customer Service, Reply Within 12 Hours View more details about this digital clock for kids

More on Digital Alarm Clock, EEEkit Large LED Display Big Number Alarm Clock for...

Saving customers' money and providing good products continue to be EEEkit's mission. The LED alarm clock with a large digital display, integrates time display, alarm, snooze bold fonts, easy to view. Alarms make it possible to set two separate wake-up times. Snooze time can be set, do not need manually to turn off the alarm clock. Wake you at different times, make your life easy and more convenient. The digital alarm clock will auto-dim from 10:00 pm-6:00 am, or it can be adjusted manually, to avoid dazzling light and guarantee a good sleep. By pressing the button "SNOOZELIGHT" the display can keep lighting for 5 seconds. The 12/24H time format display is very easy to be adjusted at any time for your preference. Insert the USB power cord or insert three AAA batteries to charge the clock. During battery backup, the screen will go black but can be a voice? activated, and the display can be turned on by clapping your hands, and it will automatically go out after 16s. The alarm and time settings will remain, and the alarm will still sound. Our clock is quiet, allowing you to get rid of the noise of the night and sleep peacefully. Simple rectangle shapes, minimalist, are not only suitable for your room but also a great gift for Christmas, New Year, or a Birthday. It has no limitation, you can give it to Teenagerss or seniors, friends, or families. Warm Tips: Please refer to the instruction manual for specific alarm clock Settings.

More on Ivation Huge 36" Inch Large Big Oversized Digital LED Clock with Stopwatch,...

SLEEK, JUMBO 2-FOOT TALL DIGITAL CLOCK | Supersized Timekeeper Displays Time, AM/PM, and Temperature for Ultimate Convenience | Jumbo Sized Digits Measure 5.25” High for Maximum Visibility & Clarity | Powered by 10-Ft AC Adapter [Included]

More on 16" Bluetooth Large Digital Wall Clock/Auto Time Sync, 10 RGB Colors Digital...

Product DescriptionThe video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.1Bluetooth Function2How to Pair1Three Modes2Auto Dimming3Countdown Timer4Alarm Clock FunctionAdapter & Cable IncludedUsing a plug-in power source instead of batteries eliminates concerns about battery life, ensuring the large digital clock operates stably over the long term. This enhances convenience and reliability in your daily life and work. Bluetooth 5.1The large digital wall clock utilizes Bluetooth 5.1, ensuring a more stable and faster connection. It's solely used for time synchronization and will never compromise your privacy. Please feel at ease using it.

More on XINSDOAKK Alarm clock - Large Digital Alarm Clock Big Numbers for Seniors &...

Battery: 3*AAA battery (not included) Parts List: 1*Alarm clock Color as shown (Due to the different monitors, there will be some color differences.) alarm clock digital clock clock alarm clocks for bedrooms clock for bedroom alarm clocks digital alarm clock loud alarm clock digital clock large display led clock

More on Tanxxt Clearance Large Digital Alarm Clock Big Numbers for Seniors & Visually...

Creative Curved Electronic Clock Large LED Clock Silent Alarm Clock Features: Innovative Design, Unique Appeal: The creative curved electronic clock features a modern, stylish curved design. It is not just a time display tool but also an artwork that can bring a distinct charm to any home or workplace environment. Large Screen LED Display: The large screen LED display ensures that the time is clear and easy to read, whether it's day or night. It provides bright display effects even in dim lighting conditions. Reflective Feature, Practical and Aesthetic: The clock's face is designed as a reflective panel, which can be used as a makeup glass or decorative glass when not in use. It combines practicality with aesthetics, adding convenience to your life. Silent Operation, No Noise: Equipped with a silent movement design, the clock does not produce ticking sounds whether it's day or night. It ensures a quiet environment, allowing you and your family to have a better rest and work experience. Multi-functional Alarm Clock: In addition to displaying the hour, it also has an alarm clock function. You can set multiple alarm alerts to meet different needs. Whether it's waking up, reminders, or scheduled tasks, it helps you manage your time accurately and makes your life more organized. Product Description: Creative Curved Electronic Clock Large LED Clock silent alarm clock Material: Plastic Color: as the picture shows, (Due to the difference between different monitors, the picture may have slight color difference. please make sure you do not mind before ordering, Thank you!) Package weight: 215g Package size: 17.6x6.1x8.4cm,(Please allow 1-3mm error due to manual measurement. please make sure you do not mind before ordering.) This product does not come with batteries

More on Sharp Super Loud Alarm Clock for Heavy Sleepers, 6 Extremely Loud Wake Up...

: The Sharp BIG BANG is the loudest alarm clock for kids of all ages. The up to 115db extremely loud alarm clock allows you to adjust the volume AND tone of the alarm sounds to create the perfect custom noise to wake you up! 6 EXTREMLY Loud Wake up Sounds – Adjust the volume and tone of the six different unique sounds that will get you out of the bed and ready to start your day! Choose from Rooster, Bugle, Nagging Mom, Jackhammer, Siren, Loud Beep – Up to 115db Alarm Volume D Extra Loud As with Custom Snooze Functionality: Allows you to set two separated alarms easily especially handy for couples or roommates who keep different schedules. When the alarm goes off, touch the snooze button on top of the clock to give you a few more minutes of sleep. Snooze can be customized to a time of your choosing from 1-59 minutes. If you don’t adjust the custom snooze, the default snooze time is 9 minutes. 3 Step Dimmer Control: 3-LEVEL ADJUSTABLE BRIGHTNESS -- The digital clock provides 3 levels of brightness (Off, Low, High) allowing you to select the most comfortable brightness. ELECTRIC POWERED with “NO WORRY” BATTERY BACKUP: Plug into standard household wall outlet (This alarm clock is compatible with 110V/120V power outlets) to power the Sharp Big Bang Extremely Loud Alarm Clock. Battery Backup (Requires 2 x AAA batteries (not included)) This clock is electric operated; The battery backup is used for storing the time and alarm settings if the power is interrupted. During battery backup the clock’s display will not be lit. Once the power is restored the display will re-light.

More on Sharp Big Bang Super Loud Alarm Clock, 6 Extremely Loud, Silver/Black, White...

Sharp Big Bang Super Loud Alarm Clock for Heavy Sleepers Hearing Impaired, 6 Extremely Loud Wake Up Sounds: Rooster, Bugle, Nagging Mom, Jackhammer, Siren, Loud Beep – Up to 115db Alarm Volume, Silver/Black Case with White LED Display. ?????????? ???????? ?????????? ??????????: The Sharp BIG BANG is the loudest alarm clock for kids of all ages. The up to 115db extremely loud alarm clock allows you to adjust the volume AND tone of the alarm sounds to create the perfect custom noise to wake you up! 6 EXTREMLY Loud Wake up Sounds – Adjust the volume and tone of the six different unique sounds that will get you out of the bed and ready to start your day! Choose from Rooster, Bugle, Nagging Mom, Jackhammer, Siren, Loud Beep – Up to 115db Alarm Volume D?????? Extra Loud A????????s with Custom Snooze Functionality: Allows you to set two separated alarms easily especially handy for couples or roommates who keep different schedules. When the alarm goes off, touch the snooze button on top of the clock to give you a few more minutes of sleep. Snooze can be customized to a time of your choosing from 1-59 minutes. If you don’t adjust the custom snooze, the default snooze time is 9 minutes. 3 Step Dimmer Control: 3-LEVEL ADJUSTABLE BRIGHTNESS -- The digital clock provides 3 levels of brightness (Off, Low, High) allowing you to select the most comfortable brightness. ELECTRIC POWERED with “NO WORRY” BATTERY BACKUP: Plug into standard household wall outlet (This alarm clock is compatible with 110V/120V power outlets) to power the Sharp Big Bang Extremely Loud Alarm Clock. Battery Backup (Requires 2 x AAA batteries (not included)) This clock is electric operated; The battery backup is used for storing the time and alarm settings if the power is interrupted. During battery backup the clock’s display will not be lit. Once the power is restored the display will re-light.

More on Danolapsi 9" Wall Clock - LED Digital Wall Clock with Large Display,Big...

Description: Name: Wall Clock Display type: digital Applicable places: living room, bedroom, study, office, kitchen, public place shape: rectangular Style: Nordic material: plastic Movement Type: Electronic Power type: external power supply Display type: LED Size: 23x7x3.5cm Packing list: 1 x Wall Clock +1 x USB cable Note: Different displays may cause the color of the item in the picture a little different from the real thing. Manual measuring,please allow 1~3mm error,thank you.