HITO153; LED Alarm Clock w/3 Alarms, Time Temperature Date, Display Sound Activated Great Fun, Brightness Adjustable (Green, 8.27"x3.54"x3.53") 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. Please clap hands/make a sound/simply touch the clock to activate its display to read time. It would be of great fun. Numerals are big and bold, so such LED clocks are very bright and attractive. Brightness adjustable (3 options, and setting accessible only in display alternating mode) (updated on Dec 26th, 2013). Clock can set up to 3 alarms. Beep from slow to fast. Clock is made of MDF wood (not real wood) and plastic wood-grain coating. It's handmade. Power Supply: 3 AA batteries (not included) or 5V charger powered. AA batteries and charger 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).