Description:Volume ControlableThis is brand new external speaker by Nagoya (NSP-150V).It is good for you to plug this external speaker so you can hear your radio loud and clear.Specifications:Plug: 3.5mm mono JackLength of wires: 3MDimension: 97mm x 66mm x 48mmMaterial : aluminiumFor : Yaesu Mobile radio FT-7800R ， FT-8900R......etc.Kenwood TM261， ......etc.Package contents:- 1 x Nagoya external speaker (model number: NSP-150V)