ADESSO (Adesso) Alarm Clock, Vibration, Digital, Radio Controlled Clock, Double Alarm, Snooze Function Included Operation confirmed with batteries only, alarm, and vibration. Requires 3 AAA batteries (not included). When operating on batteries alone, the screen will dim after a while, and there will be limitations such as inability to switch brightness, so using the AC adapter is recommended. Please check the photos for minor scratches and dirt before considering. The photos and the AC adapter are all that is included. The instruction manual is not included. - Brand: ADESSO - Color: Silver - Type: Digital Table Clock - Function: With alarm function - Power Source: AC adapter type Thank you for looking.