Highlights: ● Interface: USB to micro USB ● Function: Charging and data sync ● Unique combination of both metal and magnetism ● 2.4A big current: Suitable for cellphones, tablets and digital cameras etc. ● If necessary it will adjust the charging current automatically ● The metal port can be used as a mobile phone dustproof plug, it will be better used for bare phones ● The metal connector should be pushed straining, right after hearing the voice PAI. ● Compatible with Samsung ( S5 not included ), Xiaomi, Huawei, Meizu, HTC, OPPO, Blackberry etc. Note: It does not support S5, Coolpad, Dakele. If data transferring function can not work, it may be caused by match problems from cable and phone. We would ask for your patience to scan the QR Code, it can help you to transfer data more quickly and conveniently.