Brand new in box! 

Mount a mini-jack auxiliary input on your control panel or bulkhead with this 40" extension cable. The input is ready to be installed — just drill a 3/4" hole. An integrated cover protects the mini-jack input from the elements when it's not in use. The other side of the cable terminates in a pair of gold-plated RCA plugs. Warranty: 1 year.

Works with any marine radio with audio jacks.