30 days money back, one year replacement warranty. Cable length: approx. 5-1/2' in total, 1' from type A female USB to regulator box, 4-1/2' from regulator box to wire end. additional wires can be added to the kit's end to increase the total length. regulator power spec.: 12V~24V input, 5V 1200mA output, regulator box size: about 2-1/2"x 1' (4.5cm x 2cm). Easy installation: use a fuse tap or wiretap to draw power from fuse block or wire. Simple solution of adding an onboard USB charging port for your application. Work with mini-USB, micro-USB, USB-C & lightning cable. Kit includes one ultra-compact USB port direct hardwire kit for car, truck or motorcycle.