3D LED Desk Clock: Modern 3D Design, simple and easy to read time. The size of this clock is 9.7" x 3.9" x 0.9" Inches3D LED Wall Clock: Desktop and hangable design suitable for Bedroom, Bedside, Kitchen, Living Room, Classroom, Metting room and etcAdjustable Brightness LED Clock: With automatic brightness and 3 leves manual brightness, the digital clock shines according to the room light that didn't disturb you during the evening hours, or when youre sleepingMultifunction Clock: Only display time 12/24H mode ; Looping display Date/Time/Temperature ; Alarm ClockEasy Operation Digital Clock : Please set the clock by the buttons on the back of the clock follow the User manual.Warm Tips: The led clock is powered by USB cable only, the bulidin button battery is just for emergency power cut off situation usage; You can hide the power wire behind some items or into the wall; WITHOUT ADAPTER