Yunmai Fitness Wrist Ball red

Main Features
• Multifunctional design can be used in office, gym or home, and also can be a good pressure reducer as well as a good toy and arm muscle exercising
• Smart gravity sensor can be used to feel the centrifugal force and to strengthen your limbs coordination or rehabilitation training
• Simple operation can be powered on quickly by rotating your wrist to make fast speed
• Compact size can be put in your bags to do outdoor activities
• High-quality zinc alloy and plastic materials, durable and non-toxic
• Stylish look with a quiet sound can be a great gift