Wrist Trainer Ball Auto-Start Wrist Strengthener Gyroscopic Forearm Exerciser Gyro Ball for Strengthen Arms, Fingers, Wrist Bones and Muscles

Start-up Method: The upgraded automatic start spring design eliminates the need for a pull cord. Simply press with both thumbs and push forward (8–10 times), then release. As the wrist rotates, the rotor quickly generates centrifugal force, providing resistance to your wrist and forearm for an efficient workout. Easy to start anytime. After-sales Guarantee: If the wrist gyro ball you received cannot start smoothly or operate normally, please contact us in time, we will help you solve the Product includes: JIN BD Black Diamond Gyro Ball (non-LED version),a gift box, a storage bag, a wrist strap, and a brand card (scan the QR code to access tutorials and after-sales service) If you still have questions or encounter any difficulties, please contact our customer service promptly. Our support team is ready to provide assistance in real time. Suitable for assisting: Long-term use of computers or mobile phones, carpal tunnel syndrome and repetitive stress injuries are common. By continuously and indirectly strengthening the muscles and flexibility of the forearm and wrist, it will significantly improve muscle strength, flexibility and promote vascular circulation. Health Benefits: Arm Strength Ball improves blood circulation and strengthens fingers, wrists, hands, forearms, biceps, triceps, ligaments and shoulders Quality Assurance: JIN BD torque ball has been tested by factory machines, warehouse inspection and manual re-inspection. The product does not require battery power. The wrist rotation interacts with the inner ball core to generate centrifugal force to maintain efficient rotation. The faster the speed, the greater the force generated. Product description The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. JIN BDWrist ball Merchant Video JIN BD Wrist Ball Gyro Ball Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 3.8 out of 5 stars 5,232 3.8 out of 5 stars 5,232 3.8 out of 5 stars 5,232 3.8 out of 5 stars 5,232 3.1 out of 5 stars 179 Price — $15.99$15.99 $14.99$14.99 $16.99$16.99 $17.99$17.99 Spring-loaded (Auto-Start) ✓ ✓ ✓ ✓ ✓ Drop Resistant Material silicone resin silicone resin silicone resin silicone resin silicone resin Rotate with LED Lights Without RGB light RGB Light Without RGB light RGB Light Without RGB light Material Alloy steel, polycarbonate Alloy steel, polycarbonate Alloy steel, polycarbonate Alloy steel, polycarbonate Alloy steel, polycarbonate Item Weight 0.28 Kilograms 290 Grams 8.96 ounces 331 Grams