SPECIFICATIONS

Gyroscope Powerball Muscle Relax Arm 

Type: Wrist ball /Strength Arm Training

Features: Easy to use /Mechanical design, no power required/ The compact design can be carried around, whether in the office, gym, or at home, it can be used as a toy to relieve stress at any time, and can also exercise arm muscles/ Exercise your wrists and hands/ The hand booster ball is a centrifugal force generated by the interaction between wrist rotation and internal rotation core, which can maintain the high-speed rotation of the core, promote blood circulation, increase the strength of fingers, wrists, hands, forearms, biceps, triceps, ligaments, and shoulders, and restore muscle strength/ Automatically start the design/The operation is very simple, just push the iron core in the direction of the arrow, activated by the internal spring. Please wear a dedicated wristband during exercise to ensure that the wristband will not be lost due to excessive force/ Durable and sturdy / The ball core is made of zinc alloy material and has no strange vibrations.