Specification AgeRangeDescription : Youth BallType : Wrist Trainer Ball Brand : Keoshiga BulletPoint1 : Automatic start: The upgraded version uses a built-in pre-tensioner to start, and no starting rope is required. Press the inner ball with your thumb and move your thumb in the direction of the arrow to start the internal spring. The working principle is simple and environmentally friendly. By rotating the wrist, the ball core rotates at high speed, generating centrifugal force, so that the wrist feels a certain resistance. BulletPoint2 : Suitable for assisting: Long-term use of computers or mobile phones, carpal tunnel syndrome, repetitive stress injuries, etc. are more common. By continuously and indirectly strengthening the muscles and flexibility of the forearm and wrist joints, it can significantly improve muscle strength, flexibility, and promote blood circulation. BulletPoint3 : Sports Assistance: It is beneficial for grip training, fitness, golf, tennis, rock climbing, cycling, cricket, martial arts, etc. It has an auxiliary effect on improving finger grip and grip strength. BulletPoint4 : Exquisite Design: The Powerball can be carried anywhere, whether in the office, gym or at home, it can be used as a toy to relieve stress at any time, and it can also exercise finger grip strength training. BulletPoint5 : A chic gift: The gyro ball is a great gift for children who love sports, restless middle-aged people and people who work in the office for a long time, guitarists, pianists and other musicians BulletPoint6 : Quality Assurance: Keoshiga Torsion Ball is rigorously tested by factory machines, warehouse inspections, and manual re-inspections. This product does not require battery power. Wrist rotation interacts with the internal ball core to generate centrifugal force to maintain efficient rotation. The faster the rotation speed, the greater the force generated. BulletPoint7 : Tips: If the wrist strength ball you received cannot start smoothly or work properly, please contact us in time, we will help you solve the problem and teach you how to use it correctly. Color : Black ConstructionType : PVC CustomerPackageType : Standard Packaging Department : unisex-adult ExternallyAssignedProductIdentifier : 8771291680074 ExternallyAssignedProductIdentifier1 : 765057263951 ExternallyAssignedProductIdentifier2 : 0765057263951 ExternallyAssignedProductIdentifier3 : 0704660926969 ExternallyAssignedProductIdentifier4 : 0810089093370 ExternallyAssignedProductIdentifier5 : 00704660926969 GpsrSafetyAttestation : 1 ImportDesignation : Imported IncludedComponents : Wrist Trainer Ball IncludedComponents1 : Hand Exerciser with Counter IncludedComponents2 : Golf bag IncludedComponents3 : Wrist strap ItemDisplayDimensions_Height : 9.5 inches ItemDisplayDimensions_Length : 9.5 inches ItemDisplayDimensions_Width : 9.5 inches ItemDisplayWeight : 14.98 pounds ItemName : Keoshiga Wrist Trainer Ball Auto-Start Gyroscopic Forearm Exerciser Gyro Torque-Ball Hand Exerciser for Strengthen Arms, Fingers, Bones and Muscles, Colorful Lighting (Black) ItemPackageDimensions_Height : 3.4 inches ItemPackageDimensions_Length : 3.4 inches ItemPackageDimensions_Width : 3.4 inches ItemPackageQuantity : 1 ItemShape : Oval ItemTypeKeyword : gyroscopic-hand-exercise-balls LeagueName : curaball hand exerciser Manufacturer : Keoshiga Material : Acrylonitrile Butadiene Styrene (ABS) Material1 : Acrylic Material2 : Silicone Material3 : Zinc Material4 : Polycarbonate ModelName : Wrist Trainer Ball ModelNumber : Wrist Trainer Ball NumberOfItems : 1 PackageLevel : unit PartNumber : curaball hand exerciser ProductDescription : curaball hand exerciser;gyro ball;torque ball;torque ball hand exerciser ProductSiteLaunchDate : 2025-06-21T03:18:40.046Z RecommendedUsesForProduct : Hand Exercise Size : 15lbs SportType : Handball Style : Modern Minimalist with Playful Edge SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 TargetAudience : Unisex-Babies TeamName : Wrist Trainer Ball TensionLevel : Medium UnitCount : 1 UnspscCode : 49201600 WarrantyDescription : 1