PE Sonic Bomb(R) Alarm Clock with Super Shaker(TM). Sonic Alert SBB500ss Sonic Bomb Alarm Clock with Super Shaker 113dB alarm with adjustable tone & volume control; 12V Super Shaker(TM) vibrating unit; Built-in red flashing alert lights; Selectable snooze time 1 min-30 min; Selectable alarm duration 1 min-59 min; 12-/24-hour time formats; 5-level dimmer function; Dual alarm; Battery backup; Green power technology uses 60% less energy; Includes power cord & Super Shaker(TM) unit.