Specification: Material: Plastic + Metal Length of USB Cable: 100cm/39.37'' Diameter of USB Cable: 0.5cm/0.19'' Size of USB Switch Face: L*W*H/3.5*2.5*2.5cm/1.37*0.98*0.98'' Color: As Pictures Features: Durable and practical. Very easy and convenient to use. Suitable with: RCD510 Headunit Model: China Made 5ND0350190, 5ND0350190A, 56D035190, 56D035190A, 3AD035190 315 Headunit Model: China Made 3AD035272 Package include: 1 x USB Switch Cable 1 x USB Switch