Force Ball start method: 1> Insert the red rope head into the hole,rolling within the ball, the rope tightly wrapped in the ball inside the ball,and pull straight down, fast enough to rotating turn the LED on. 2> Turn your hand facing down, and slowly start to rotate,you will feel that it is scratching against the inside of the wrist ball. 3> Keep rotating your wrist and the force ball will spin faster, Wrist ball high-speed rotation of the kinetic energy and sound will bring you a new shock. Features: ◆Internal LED bulbs will light up when the ball is in motion.the force ball lights up when it's spinning,and the LED light is not powered by batteries but your Wrist high-speed rotation.It's battery free.No need to worry about power running out! ◆The Forceball can generate between 1 and 30 pounds of resistance by spinning at almost 10,000 rpms. ◆Force Ball Wrist Ball Toys Hand Grip Strengthener;Hand Grip Exerciser;Relieve Stress -Anti Stress Anti anxiety for EDC,ADHD,Children,Teens,Student and Adults. ◆Strengthen fingers,wrists,hands,forearms,shoulders and bicep etc,and also be beneficial in promoting co-ordination and blood circulation. ◆Rehabilitates sore muscles and joint, great for musicians, guitarists,pianists,drummers Specifications: ◆ Material: ABS + PC ◆ Item weight: 334g ◆ Package size: 10 * 8 * 8cm/ 3.9 * 3.1 * 3.1in Package list: ◆ 1 * Force Ball ◆ 1 * Starting rope ◆ 1 * Wrist strap ◆ 1 * English instruction
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