Description: The design of this clock is very simple. The LED light will automatically dim at night and light up during the day. From multiple angles, you can see the time because the digital alarm clock is designed with special curved LED screen. Made of ABS material, it is durable and using for a long time. This product length is 17cm, width is 7.2cm and height is 3.1cm. Besides, the USB cable length is95cm The digital clock is suitable as a gift for children and teachers. Item Name: Alarm Clock Material:ABS Power Supply: USB Plug-in Battery Power Supply Batteries: 3 x AAA Batteries (Not Included) Power Cord Length: USB cable about 95CM Power-off Method: Batteries Need to Be Installed (with 3 AAA Dry Batteries) Power Supply Mode: USB Plug-in Mode-always on; Battery Mode-off screen, Voice Activated Wake up Brightness Adjustment: Press The up Key to Adjust the Brightness in Two Levels Night Mode: The Default Brightness Is Automatically Dimmed From 18:00-6:00, The Time Interval Can Be Set by Yourself, and The 12/24 Hour System Is Switched Snooze_Function: 5 Minutes by Default, 1-60 Minutes Can be Set Size:17cmx7.2cmx3.1cm/6.69inx2.83inx1.22in Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 X LED Clock 1 X Base Bracket 1 X USB Cable 1 X User Manual