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Dumbbell power / Charging back cover

Dumbbell power
Dumbbell power

Effective use of this product the way to get thin arm slimming power feedback to let more motivated.
The handset charging cradle seat combined with APP law to allow movement of more systematic. So if you save electricity that can be better achieved by the Green Earth purposes.


Southern Taiwan University of Scien

Southern Taiwan University of Scien
Tainan, Taiwan