Compact and retractable USB Power Port Ready charge cable designed for the Sonocaddie v300 GPS and uses TipExchange Included TipExchange Tip ensures the fastest charging by putting your phone into charge mode rather than the typicale USB data mode that every other brand does ... this attention to detail resulting in faster and more consistant USB power port charging Ever been stranded with a dead battery because your USB data cable didnt put your Sonocaddie v300 GPS into charge mode? At Gomadic we resolved this issue ... read on below in to learn what we do different with our USB Power Port Ready cables Cable tip wiring and power configuration is designed to Sonocaddie specification to guarantee to put your v300 GPS into the proper charge mode for the fastest charging possible cable expands from 2 to 34 inches in seconds (and everything in between). Simply press the integrated retraction button, and the cable effortlessly rolls back into the casing. ultra compact and spring loaded retractable mechanism will expand to 38 inch total cable length and then retract back into a 2 inch case which will fit neatly in a shirt pocket.