JURAGH Gyro Wrist Trainer Ball - Hand Forearm Strengthener Ball - Advanced Power Auto Start Technology for Exerciser Stronger Muscle Fingers Bones Workout (Colorful Light)

About this item

• MULTIPLE BENEFITS: Gyro Exercise Ball for Golf, Tennis, Climbing, Martial Arts and any other sports that requires moving arms and wrists, Powerball increases finger strength and improves finger dexterity and joint flexibility.
• GOOD FOR HEALTH : Using wrist gyro balls for exercise can alleviate problems such as wrist soreness and finger stiffness caused by prolonged fixed hand movements, and can also promote blood circulation. An interesting palm wrist gyro ball that can be used as a stress relieving toy, played at any time, and can also exercise arm muscles.
• HIGH QUALITY: The inner part of this wrist power ball is made of zinc alloy and the outer part is composed of silicone, the built-in spring of the ball uses the inertia of the spring to rotate the center of the ball. The device rotates smoothly without noise.
• BATTERY FREE DESIGN : Precision mechanical design, no battery required to provide power. The interaction between the rotation of the wrist and the internal ball core generates centrifugal force, which can maintain high-speed rotation. The faster the speed, the greater the force generated.
• IDEAL GIFT: The stylish appearance and quiet sound suit everyone, it is a good gift for family and friends. Ideal for athletes, guitarists, pianists, drummers and administrative workers.