... ,3,4 copper wires,one pull lenth is 10-20cm,double reels5.Line diameter: Ø0.75,1.0,1.25,1 ... .5 mm2 (China),Chinese standard: 220V,6A6.Internal spring:imported Japan ... : ethernet,USB,iphone,ipod,and other connector you want11.Feature:double retractable,it’s very convenient for travel and home use12 ...