Specification: Brand new Size: Approx. 21.5*3.8*8.8 cm Display: LED Power Supply: CR2032 battery (included) DC transformer: 5V / 500mA - 1000mA (not included) USB Cable (included) Large colorful LED display, you can easily read the value 12 / 24 hours time display for your choice Alarm and snooze function Supports night mode (18:00 to 06:00) 3 levels of luminance display (bright, medium, dark) 3 functioning buttons (MODE, UP, DOWN) Package Included: 1 x Wall Clock 1 x USB Cable Note: The button cell is only to record the set time When connecting to the DC adaptor or the USB cable, the clock will display time When alarming, it will stop alarm if plug out the DC adaptor or the USB cable Please allow minor deviation due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.