The MLS-100 External Speaker is a high performance communication speaker that meets the impedance and output requirements of most Yaesu amateur radio transceivers. It mounts on a swivel bracket supplied with mounting screws and bolts. A 6.5-foot (2m) audio cable ending with a 3.5mm mono mini-plug is also provided. Black plastic speaker and black metal frame. The impedance is 4 ohms and the maximum power is 12 watts. The size is 5.5 x 4.2 x 2.5 inches.