1 With fuse， small size， easy to install2 USB port with waterproof cover3 With long cable4 Can install on the accumulator directlyModel: CS-30Color: BlackMaterial: plastic + electronic componentsDimension: about 6 x 4 x 2.5 cm ( main part size )Power indicator: YESUSB port: 1Input voltage: 12VOutput Current: 1A Output voltage: 5V Overall length: about 184 cmCable connection way: can connect with accumulator directly， red cable connects with its positive pole while the black cable connects with its negative pole.Note: Please do not lay the USB port into water during charging period.1 x Phone charger1 x Fuse1 x Rubber stopper4 x Cable tie<br /><img src="http://img6.eachbuyer.com/x9/p100/bv590_1.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/bv590_2.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/bv590_3.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/bv590_4.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/bv590_5.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/bv590_6.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/bv590_7.jpg" />