JBL On Stage III WM, On Stage. Audio output channels: 1.0, RMS rated power: 20 W, Frequency response: 70 - 20000 Hz. Headphone connectivity: 3.5 mm. Dimensions (WxDxH): 190 x 190 x 51 mm, Weight: 0.51 kg. Colour of product: Black. Compatible products: Walkman models except NWS703F, Speaker power: 10 W