1.Wrist power gyro ball brings you a different way of exercising. When you try to understand it and control gyro power ball, your mood is joyful. It's a magic ball that can bring you happiness, stress relief and health all at the same time.<br> 2.Gyro ball will give your hands, wrists and forearms a workout with resistance training. It can develop and shape your grip and forearm muscles to improve baseball, tennis, golf games and most sports.<br> 3.Burn fat and get rid of flabby arms. It may help prevent and relieve repetitive stress induced injuries like carpel tunnel syndrome, tendonitis and RSI. gyro ball is a compact, simple way to isolation exercise without having to go to the gym. Lightweight, portable and perfect for traveling. It’s a great gift for anyone with no time to work out.<br> 4.No starter cord or external battery powered aid needed. We’ve made using the gyro ball to strengthen your wrist and arms easier than EVER. The gyro ball incorporates a pre-tensioner inside the gyroscope that allows for a simple roll back to spin up the gyro with enough momentum to get you started.<br> 5.Our gyro ball are a quick and effective way to increase your grip strength and an excellent complement to those who play sports. Professionals and amateurs alike can all benefit from our "One minute One healthy hand" pledge!<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store