Make Arm Great . Strengthen fingers, wrists, hands, forearms, shoulders and bicep etc., and also be beneficial in promoting co-ordination and blood circulation.
Automatic start design, need to push the core in the direction of the arrow, start by the internal spring, very easy and convenient.
When it rotates, the cool colored lights inside wheel light up. It can kill time and add fun while restoring muscle soreness.
Small, compact and transportable, you can take anywhere. Simple to start with a pull-string.And the ball with flashing LED ，all you need do is to increase the speed by making a rotational wrist movement and to keep in sync with the spinning of the ball.
Without any strange vibrations, it can rotate for a long time without worrying about it stopping when moving.
The convenient design can be carried anywhere, whether in the office, gym or at home, it can be used as a toy to decompress at any time, and it can also exercise arm muscles.
Wrist ball can promote blood circulation and increase the strength of fingers, wrists, hands, forearms, biceps, triceps and ligaments and shoulders, and restore muscle strength.
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