Wooden Digital Alarm Clock with 7 Levels Adjustable Brightness, Voice Command Electric LED Bedside Travel Triangle Alarm Clock, Display Time Date Week Temperature for Bedroom Office HomeSOUND CONTROL: Under POWER SAVE mode, the display will turn off after 15s, any tap or sound over 60 dB with close distance will wake up the smart led alarm clock. You can turn off this function if you don't want it. ADJUSTABLE BRIGHTNESS: Gradual change 7 levels brightness can be manual selected for this electric digital clock. It suitable use at night, the soft lighting doesn't hurt your eyes. DUAL POWER SUPPLY: This desk alarm clock come with USB