DESC: Features Include: Wake to your choice of buzzer or the AM/FM station you prefer, Sleep to the AM/FM radio station of your choice, Programmable Sleep Timer with 59 minute countdown, Bright 0.9" Large easy-to-read display with alarm and PM indicators, Hi/Lo clock dimmer, Large easy-to-find snooze button, Runs on a 120 volt AC plug, Measures: 7.1"W x 4.8"H x 2"D , "BBS" Battery Backup System requires one 9-Volt battery (Not included, see Suggested Accessories below to order).