Thank you for coming to our shop, I hope it is to your satisfaction Category: LED Clock Material: ABS Power Supply: USB Plug-in or Battery Power Supply Battery: 3 x AAA Batteries (Not Contains) Power Supply Mode: USB Plug-in Mode-always on; Battery Mode-Off Screen, Wake Up by Voice 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 Power-off Memory Function: Batteries Need to be Installed Snooze Function: 5 Minutes by Default, 1-60 Minutes Can be Set Peculiarity: Durable, Convenient, Gift Size: 17cm x 7.2cm x 3.1cm/6.69" x 2.83" x 1.22" (Approx.) USB Cable Length: 95cm/37.4" (Approx.) Instructions: The design of this clock is very simple. We only need to keep three function buttons and two snap switches to complete all operations. Digital alarm clock with special curved LED screen, you can clearly see the time from multiple angles. The LED light automatically dims in night mode and lights up during the day. The digital clock is suitable as a gift for children and teachers. Kindly Remind: Due to light and display, there may be slight differences between the picture and the actual color of the product. The color is subject to the goods received. In addition, please allow slight size difference due to manual measurement. High quality, assured choice is guaranteed! Package Contains: 1 x LED Clock 1 x Base Bracket 1 x USB Cable 1 x User Manual