Auto-Start Wrist Trainer Ball, Gyroscopic Ball, Forearm Exerciser Strengthener, with LED Lights, for Stronger Arm Muscle (Color : Style 2) (Style 1)

??What is the use of this gyro ball? Gyro ball is a quick and effective way to strengthen your grips,wrists,and forearms ??Features ?? Wrist ball features an extremely l automatic starting function. ??Compact and lightweight, portable and easy to store. ??It helps to perfect the fine motor skills you have mastered in non-mainstream arms. ??Help to relieve tension without batteries or power source. ?? Product Details Product name: wrist ball Inner ball material: zinc alloy Shell material: polycarbonate, silicone The product contains: wrist ball*1, Wrist strap, Ball bag(not including other things) ??Usage Instructions: 1. Wearing a special wrist strap is safer to use. 2. Lightly press the core with both thumbs and push it in the direction of the arrow until the core cannot roll forward. 3. Quickly release the core and then one palm grasp the ball body and rotate it. 4. After feeling the ball rotates, the wrist can freely control the ball in a circle. ?? Service: 1. If you need more styles, please click our other products to find the style you want. 2. If you have any questions before or after your purchase, please do not hesitate to contact us.

• 【Centrifugal force rotation】Pure mechanical design, the rhythm and speed of the core rotation can be adjusted arbitrarily through human control. The faster the speed, the greater the force generated.
• 【Stainless steel core shaft】The core shaft with strong hardness is used, which is not easy to deform and runs stably. The ordinary shaft is easy to bend after the ball is dropped, resulting in vibrations in the hand and big sound defects.
• 【Decompression Fitness】Effectively relieve the musculoskeletal pain and arthritis caused by long-term use of wrists and arms, also can help fitness enthusiasts carry out targeted strength training.
• 【Variable speed lights, gorgeous and diverse】As the speed of the core increases, the internal light-emitting strips will be more gorgeous, increasing the fun of exercise and experiencing the colorful rhythm
• 【Applicable Sports Training】Suitable trainning for cycling, health massage, basketball, fishing, running sports, hiking and camping, fitness body,other ball sports and etc.