Power Ball on Wrist Self-Lifting Spinning Ball for Strengthening Arm and Finger Muscles Hand and Wrist Trainer

Auto-start function: The auto-start function ensures a smooth and consistent training experience, enhancing user comfort. Versatile muscle targeting: Designed to strengthen arm and finger muscles, it's ideal for musicians looking to improve dexterity and endurance. Multi-sport utility: Beyond wrist training, this ball is suitable for various sports such as tennis, squash, cycling, and rock climbing. Compact and portable: At 10% smaller than the competition, this wrist ball is easy to carry, ideal for fitness enthusiasts who are always on the go. High-intensity training: With a maximum rotation speed of over 12,000 rpm, this wrist ball delivers an intense resistance workout, reaching up to 32 kg.