HITO Wood Grain LED Alarm Clock - Time Temperature Date - Display Sound Activated - Brightness Adjustable (black coating, Blue) LED Display: only shows time, or alternates between time, date and temp in cycles. Time(12/24), Date(mm/dd), Temperature(C/F). Display can be set to be Sound Activated (clock's still working), OR stay on all the time. If sound activated, display turns off after 15 seconds. You clap hands/make a sound/simply touch the clock to activate the display to read time. Brightness adjustable (3 options, and is limited to display alternating mode). Clock can set up to 3 alarms. Clock is made of MDF wood (not real wood) and graining coating. Size: 5.3" x 3.3" x 3.0". Power Supply: 3 AAA batteries (not included) or USB powered (USB charger not included). AAA batteries and USB power supply can be used simultaneously, and batteries act as a backup. Built-in AG3 batteries serve to keep settings in case of power failure (AG3 batteries cannot be changed).