The HB642735ECW battery has a capacity of 660 mAh and is designed for the Huawei Watch Elf-G00/G01, 3, 3S, 3X, and 3 Pro, as well as the Honor K2 and Kids Watch K1-G01/G05.
- Type: Battery
- Capacity: 660 mAh
- Compatibility: Huawei Watch Elf-G00/G01, 3, 3S, 3X, 3 Pro, Honor K2, Kids Watch K1-G01/G05