The new Lightning connector official debut. It has a full-bit， 8-signal design， durability is far better than 30-pin connector. In the eight contacts Lighting transmission line， there are four for data transmission， for connecting the two parts， For providing a power， ground， and one for. Durable， longer. Lightning is another outstanding feature: It can use double-sided， that is to say， regardless of how both sides can be easily inserted into the charge. Although similar in appearance Lightning general Micro-USB cable， but a higher number of lines Lightning quality of the production line， data transmission is more stable.