Kenntsh Two color coil transformer, small size and high power, reject all short circuit and improve the utilization rate of PCB board. The design of aluminum alloy cooling holes for vehicle power amplifiers has contact with air and faster heat dissipation. Colour:black Material:Metal Size: 24 x 20 x 4.5cm Package Contents: 1 x audio amplifier Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.