THE ALARM CLOCK THAT DOES IT ALL! The Sonic Blast is a SUPER LOUD DUAL alarm clock with a next-generation Bluetooth speaker that produces high fidelity audio. The Sonic Blast features a built-in projector to display the time on the ceiling above your bed or on the wall across the room. Charge your phone via the USB port while wirelessly streaming your favorite jams. This dual alarm clock allows you to custom record a wake-up alarm or select from 3 prerecorded alarms, all with adjustable tone and volume control. Battery backup is optional using a CR 2032 (purchased separately). The power supply comes with the clock. Battery backup is optional using a CR 2032 (purchased separately). The power supply comes with the clock.