说明

• Specification: Product Name: Wrist Power Ball Ball core material: zinc alloy Shell material: polycarbonate, silicone Features: 1 Finger exercises, wrist strengthening, and comprehensive arm workouts 2 Built in automatic elastic device, one click, clean to start and management energy three Mechanical energy does not require a power source 4 The centrifugal drive generated via the interaction between wrist rotation and the inner ball core retains the ball rotating at excessive speed Products include: 1 *1/2PCS Wrist drive ball Notices: 1 allow 1-2mm differs thanks to guide measurement, thanks 2 could be some slight variations within the colour tone of the photographs and the actual merchandise 3 If there may be any challenge with the product, please touch me before you leave a comment, I will do my supreme to resolve the problem for you you to your figuring out

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