Digital Clock, [Square Wooden Series] Voice Sound Activated Wood LED Digital Alarm Clock Powered By USB/AA Battery Perfect for Bedroom Travel Square Brown Wood & Red LED Lights Unique Modern Digital Alarm Clock Design manufactured using premium wood materials Alternately displays time or temperature. Sound Detection Feature: Clap your hands or any sudden noise will activate and light up the display time Time display 12-hour or 24-hour mode. Able to set three different Alarm Times with "beep" lasting for 1 minute before turning off Powered using USB 5V Power Supply or 3 x AA batteries (not included)