Yes, Huawei 40W charger is also compatible with 5V2A output, can be used with the charger temporarily, long-term use is best to use 10W ordinary charger, only temporary use, long-term use may damage the phone.
Huawei gt3 supports wired fast charge and wireless charging functions, in addition to charging with a special wireless charger, but also can use Huawei mobile phone to reverse wireless charging of the gt3 watch, Huawei gt3 battery capacity of 42mm version 292mAh, 46mm version 455mAh.