Fall asleep to your choice of 12 different nature sounds–ocean waves, wind chimes, waterfall, babbling brook, rainforest, heartbeat, steam train, foggy harbour, tick tock, river birds, tropical thunderstorm or white noise. Choose an alarm sound that will wake you–Big Ben, cuckoo, antique clock, bird song, fog horn, "boing" sound, triangle, or the standard alarm beep. LCD displays time, calendar and colour changing backlight. Has 12 or 24-hour time format, 10-minute snooze function and sleep timer that operates in 15-minute increments... sleep a little longer from 15 minutes to 2 hours. Requires three AAA batteries, sold separately. WEB ID: 6311386