Portable/Travel Alarm Clock Stereo Speaker System For iPhone/iPod (8w) with Rechargeable Battery Pack. Splash-Resistant Zippered Travel Case. Universal Well Accommodates All Docking iPod/iPhone Models. Charges iPhone/iPod Batteries When Used With AC Adapter. Line In Jack For Connection Of External Audio Sources. Digital Alarm Clock With Back Lit LCD Display. Time Sync. Synchronizes The Built In Clock With The Clock In Your iPhone/iPod. Wake To iPhone/iPod Or Buzzer Alarm. Sleep To iPhone/iPod With Auto Shutoff. Operates on built-in rechargeable battery pack. SRS TruBass. Battery Back Up For Clock (CR2032 Battery Included). 100V-240V Universal Voltage Adapter Included.