【Exercise Your Hands】Hand strengthening ball improves blood circulation and when used with the finger tightener, it can increase the strength of fingers, wrists, hands, forearms, biceps, triceps and ligaments and shoulders, restoring muscle strength. AUTO START - Our wrist gyro ball is designed with an automatic start, just push the core in the direction of the arrow and it will be activated by the internal spring, which makes it very easy and convenient to train your arms anytime, anywhere. FUN LIGHTS - When the gyro ball for exercise is spinning, the colored lights inside light up. The wrist strengthening ball not only serves as a stress toy to hang out and increase fun, but also reduce arm muscle aches. Durable: The finger exerciser is made of zinc alloy inside and silicone outside. This wrist gyroscope ball is extremely durable and does not emit vibrations or extraneous sounds, nor stop spinning suddenly when in use. 【Portable】The wrist exerciser comes with a lanyard and is light enough to carry with you, whether in the office, gym or at home, it can be used as a de-stress toy at any time and to strengthen arm muscles.

• Durable: The finger exerciser is made of zinc alloy inside and silicone outside. This wrist gyroscope ball is extremely durable and does not emit vibrations or extraneous sounds, nor stop spinning suddenly when in use.
• 【Portable】The wrist exerciser comes with a lanyard and is light enough to carry with you, whether in the office, gym or at home, it can be used as a de-stress toy at any time and to strengthen arm muscles.

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