Sonic Alert SBB500SS Sonic Bomb Extra-Loud Dual Alarm Clock with Red Flashing Alert Lights and a Powerful Bed Shaker Turbo charged loud, vibrating alarm clock Shakes you awake with powerful bed shaker and adjustable extra loud alarm Built-in pulsating alert lights Adjustable volume and tone Snooze defuser Large red LCD Explosive red display Battery back-up, will work with optional 220V adapters 1 Year manufacturer's warranty Black with red accents 113db extra-loud alarm with adjustable tone & volume control Packaged with our newest most powerful 12 volt bed shaker 5-level dimmer & test function to ensure your clock is setup properly Dual Alarm and equipped with 12/24 hour time capability Built-in red flashing alert lights, and battery backup