1. support the new ios11 system

 With PC+ABS high gloss effect, the whole product is more exquisite. 

 2. functions are complete:

 A: dual lighting just matches iPhone original lightning earphone and data line, and 3.5 solves the problem of ordinary headphones. 

 B: dual lighting using original headphones can be called, line control.

 C: the sound quality transmitted through the secondary switch is comparable to that of the original earphone. 

 D: support for IOS10 and IOS11 (no popup)