Self-starting Wrist Relax Trainer

• 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.
• Computer calibration ball heart balance, high stability and low noise.
• Self start(Inside have spring can start by self after a pull).
• Special durable plastic materials.

Notice

•  Avoid falling. Wrestling can cause shaft bending, vibration, abnormal sounds, and cannot be repaired.
• 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.
• When applying the wrist ball, pay attention to the regular rotation of the wrist circle.
• Please do not throw anything in the wrist ball, it will be unusable.
• Please do not use any wrist part of the body to try to stop high-speed wrist ball to avoid injury.
• The newbie should check whether the wrist rope is firm before using it. Rope is For fall protection only.
• Wrist ball is not recommended for people under 8 years old and over 80 years old.