Power Wrist Ball

Exercise with gyro technology. Auto Start Feature - Smart design, easy to start, no batteries required. Start with your fingers, the quicker you spin, the more power you get. Relieve stress, helps with the recovery of muscle and ligament injuries. Exercises your wrists and hands, spinning at up to 15,000+ RPM to get your wrist exercised. Awesome for warm-ups and all round arm exercises. 70x55mm