Roadstar TRA-2172. Radio type: Portable, Tuner type: Analog, Supported radio bands: AM, FM. Headphone connectivity: 3.5 mm. Width: 53 mm, Depth: 20 mm, Height: 92 mm. Battery type: UM-4, Battery voltage: 1.5 V. Package dimensions (WxDxH): 62 x 37 x 110 mm