20 Station Pre-Sets (10FM, 10AM) with Aux-In, Adjustable Tuning Steps, Auto Seek Stations, Adjustable Sleep Timer and Snooze Function 2 Alarm Timer, wake by Radio HWS (Humane Wake System) or Buzzer Built-in Lock Switch and Battery Power Status Indication and Stereo Headphone output Operates on 4 AA Batteries or AC Adapter (not included) Sangean Factory Approved AC Adapter Model#ADP-PR-D19 sold separately Included components: Owner's Manual Power source type: AC & Battery