AUTO-START TRAINING: Start the ball by spinning the rotor with your thumb, then keep it going by rotating your wrist. Designed for quick daily wrist and forearm exercise without a starter cord.
GYROSCOPIC RESISTANCE: As the rotor speeds up, resistance increases to create a more challenging wrist and forearm workout while supporting daily hand and grip training.
SOLID ALL-METAL FEEL: Built with a durable metal shell for a more solid in-hand feel and a more stable, premium training experience.
VISIBLE SPEED FEEDBACK: The built-in LED changes color as speed increases, adding a visible cue during use and making training more engaging.
COMPACT AND EASY TO CARRY: Includes a storage bag for convenient carry and storage, making it easy to use for home wrist exercise, work breaks, warm-ups, or outdoor activity breaks.
