The Sonic Alert Boom Alarm Clock is for individuals of all ages who think they might not wake up in the morning. At 113db, this alarm is sure to rattle your windows and force your eyes open. And if that doesn't put your feet on the floor, the pulsating alert lights and Super Shaker bed-vibrating unit will. This extra loud alarm clock will ensure that you dont miss your appointments and help you stay punctual. Powered by 9V battery, this Sonic alert vibrating alarm offers you a reliable performance.