Hand Strengthener Wrist Ball Super Gyroscope

Overview:1.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 exercising2.Smart gravity sensor can be used to feel the centrifugal force and to strengthen your limbs coordination or rehabilitation training3.Simple operation can be powered on quickly by rotating your wrist to make fast speed4.Compact size can be put in your bags to do outdoor activities5.High-quality zinc alloy and plastic materials, durable and non-toxic6.Stylish look with a quiet sound can be a great gift7.Computer calibration ball heart balance, high stability and low noise8.Self start(Inside have spring can start by self after a pull)9.Special durable plastic materialsNote:1. Avoid falling. Wrestling can cause shaft bending, vibration, abnormal sounds, and cannot be repaired.2. Please do not shake the wrist force ball or press the center of the ball hard, it will cause damage to the ball shaft or generate noise.3. When applying the