868N Wrist ball with LED

GENERAL PRECAUTIONS:
-Do not drop the ball on hard surface at any time , the heavy rotor will damage.
-Do not touch the ball rotor when it is spinning at high speeds,it will burn.
-Do not use this product persons who with heart conditions of any description.
-It is recommended strongly those children under 12 are supervised by an adult.
-Keep the inner parts of the abll clean and avoid any oil contamination.
-Keep away from dust and damp

FUNCTION:
-Perfect exercise gadget for sports like golf,tennis,squash,cricket,baseball,bowling,basket ball,motocross,mountain climbing.
-Increase strength in fingers, wrists,hands,forearms,biceps,triceps,ligament and shoulders.
-Great benefit for musicians,guitarists, pianists,drummers.
-Rehabilitates sore muscles and joints.

THEORY:It is application by centrifugal force & inertia like a gyroscope.
DYNAMIC:There is no any battery or electricity inside the device, it is powered by rotating the wrist, and the speed of rotation can reach over 12000 R.P.M

Description:
Sheel material: A GRADE PC
Roller material:  Zinc-alloy and a grade ABS
LED: 6pcs a grade LED
color:green/blue/orange/red

Item No.:868N
Product naem:Wrist ball with LED 

Description:
Sheel material: A GRADE PC
Roller material: Zinc-alloy and a grade ABS
LED: 6pcs a grade LED
color:green/blue/