Auto Start Wrist Ball -Black

Strengthen fingers, wrists, hands, forearms, shoulders and biceps, and also be beneficial in promoting co-ordination and blood circulation. An intense hand, wrist and forearm workout wherever you go.

。Small, compact and portable

。No starter cord or battery required. Just roll the rotor in the direction of the arrow. When sufficient tension is achieved, release and start to rotate your wrist.

。Control the speed at your wish – spin slowly for gentle rehabilitation or spin fast for muscle building, toning and strengthening

。Suitable for the elderly, nursing, treatment, rehabilitation personnel

。Speed up to 10,000+ RPM, which in turn provides about over 22lbs of torque for an intense hand

。The anti-slip band allows you to have a greater control of the ball

。Wrist strap attached keeps the ball from slipping off your hand

Body shell-ABS

Anti-slip band-silicone

Wrist strap-nylon

Rotor-Steel, PC

• Wrap the wrist strap around your wrist while using Wristball to avoid letting it slip off your hand.

• Avoid touching the rotor while it’s spinning as this may cause friction burn or pinch the skin.

• Avoid dropping Wristball at any time.

• Keep Wristball from dusty environments as dust may be brought into the body shell destroying the inner parts.

• NEVER oil Wristball’s inner parts as this will destroy the resistance which occurs between the inner moving parts, and the ball will no longer function.

• Do not take Wristball apart.