Color Black Brand N/A Model N/A Quantity 1 Set Material PC Type Interphone Application OthersHelmet Bluetooth Version No Intercom Function Yes Intercom Effective Distance 150 cm Power Supply 2 x AA (not included) Waterproof Function No Interface 1 x 3.5mm Other Features This intercom has two switches for volume adjustment 2-channel microphones and 1-channel audio input (audio input: CD MP3 cellphones and so on); With the included audio cable you can enjoy musics during riding. Packing List 1 x Motorcycle intercom 2 x Wired earphones (150cm) 1 x Cable (95cm)