Sena SMH5EV/SMH5-FM/SMH5-FM-A Bluetooth Stereo Headset Intercom Black/Red
Headset: 69.9 mm x 45.0 mm x 30.6 mm (2.8 in x 1.8 in x 1.2 in). Headset: 40 g (1.41 oz). Headset Profile (HSP). Bluetooth 3.0. Clamp unit: 49.2 mm x 38.9 mm x 22.1 mm (1.9 in x 1.5 in x 0.9 in). International Order.