Product information:
Size: no.6, no.7, no.8, no.9, no.10, no.11, no.12, no.13
Battery capacity: 20mAh
Applicable people: Adults
Wearing method: wear directly
Applicable system: Android5.1 (included) or above, IOS8.0 or above
Additional functions: exercise, photographing, and health monitoring
Compatible Platforms: Android, IOS
Material: Alloy