Product description< Working Voltage : 3-5V< Size : 158*55*87mm< Material: Plastic + plexiglass mirror< Color: white light, blue light, green light< Package List< 1 x LED Digital Mirror Alarm Clock< 1 x USB Cable< 1 x User Manual< 1.Unique Mirror Large Display Design-- Ultra-large LED display, you can see the time clearly even at a glance within 30 feet of your bedroom,and the display is also can be used as a mirror in daily use,simple and interesting.< 2.Adjustable Brightness & Night Mode--The digital alarm clock provides 3-level brightness,adjust by manual or auto to a comfortable brightness and the LED light will automatically dim during your sleep time to protect your eyes at night and save energy. No blinding lights or any annoying sounds disturb your sleep,create an peaceful environment for sleep.< 3.Snooze Function--Big snooze button helps you to easily turn off the buzzer without opening eyes, and get extra 5 minutes sleep, but simultaneously prevent oversleeping. The digital clock will alarm every 5 minutes until you turn off the snooze mode by pressing any other buttons, perfect for heavy sleepers.< 4.Dual USB Charging Ports & Battery Backup--Equipped with two USB charging ports on the digital alarm clock,you can charge cellphone,tablets and other electronics devices simultaneously when you charge the clock. No need to worry about low battery when you play your phone on the bed, very convenient for life.Backup battery (included) only stores time and alarms' settings.