Challenging Torque Ball-Metal Gyro Ball Wrist Exerciser, Wrist and Hand Exerciser with Metal Shell, Auto-Start Gyroscope for Strengthening Arms, Fingers & Wrist, 5-Level Color-Shifting

Challenging Torque Ball-Metal Gyro Ball Wrist Exerciser, Wrist and Hand Exerciser with Metal Shell, Auto-Start Gyroscope for Strengthening Arms, Fingers & Wrist, 5-Level Color-Shifting

• Auto-Start Design: Push metal core as arrow, gyro ball wrist exerciser starts with the internal spring and wrist motion. LED lights change with rotation, making it a magical torqueball that can bring you happiness, stress relief & good for health
• 5-Level Color-Shifting Challenge: The wrist ball’s core matches LED colors to wristball’s core speed: Blue, Green, Red, Purple, Cyan. The gyroscope wrist exerciser can train wrist strength, and bring you the joy of competitive challenges
• Excellent Quality£ºThe gyro ball wrist exerciser forearm strengthener features a full-metal shell, non-slip silicone grip, anti-slip wrist strap design. Powered purely by mechanical driving without electricity, it ensures stability, control, durability, & longevity
• Pocket-Sized Power: Slip the compact gyro ball wrist exerciser in your bag. Office warriors combat keyboard fatigue, musicians sharpen finger agility, travelers maintain arm tone ¨C gym-free fitness made simple
• Strengthen Wrists & Hands: The wrist gyro ball targets joints, ligaments, and muscles of the hands, wrists & forearms£¬perfect selection for office workers, students, tennis trainer£¬bowling ball exerciser and badminton trainer