Sangean RCR-3 RCR-3 AM/FM Atomic Digital/Analog Clock Radio (White) Sangean RCR-3 RCR-3 AM/FM Atomic Digital/Analog Clock Radio (White) Radio Controlled Clock Available from DCF / WWVB Dual Time Display LCD and Analog Clock 4 alarms by radio or HWS (Humane Wake System) buzzer Snooze, Nap and adjustable Sleep Timer Includes Switching AC Adapter 100-240V, 50/60Hz Radio Controlled Clock. The radio could be set to RDS CT instead of WWVB. Kindly refer to the Use Manual provided below. Unit needs AC Power to operate, no battery is needed or included.