TAKE A LOOK AT THIS:Hand Strengthener Exercise Machine Sports Equipment Electronic Wrist Force Gyroscope  Powerball Fitness Ring Centrifugal Ball
PRODUCT PROPERTY:? 1: Yangchen is a professional brand.The type of our product is wrist exerciser.The type of sports of our product is strength training.Our product is made in cn(origin).
? 2: The training site is arms.The function of our product is arms.

REASONS TO BUY:? Machine: the wrist exerciser is equipped with a large-capacity power ball, which can be used to perform various exercises. 
? Fitness power gyroscope wrist ball gyro: get a full body workout with the power gyroscope. this wrist ball features advanced electronic fitness technology to help you build muscle and improve your wrist strength. 
? Powerball exercise equipment: the powerball machine can help you build muscle, burn calories and relieve back pain. it is a great addition to any fitness gym or home workout routine. 
? Package content: the package contains a wrist force ball, a pair of power balls, and a pair of fitness rings. 

RELATED INFO:? Gyroscope ball exercise: the gyroscope ball is an interesting and interactive device that can help you develop intelligence and coordination.