Feature

●All you need do is to increase the speed by making a rotational wrist movement and to keep in sync with the spinning of the ball.The faster you spin the harder your muscles work.
●Internal LED bulbs will light up when the ball is in motion.Small, compact and transportable, you can take anywhere.
●It is powered by rotating the wrist and the speed can reach up to 12.000RPM.Counter function allows you to check your rotating speed.
●Strengthen fingers, wrists, hands, forearms, shoulders and bicep etc., and also be beneficial in promoting co-ordination and blood circulation.
●Simple to start with a pull-string.Rehabilitates sore muscles and joint, great for musicians, guitarists, pianists, drummers.


Description

Specifications:
Material: PC + PP
Color: Blue
Item size: 7.3 * 6.1cm/ 2.9 * 2.4in(D * H)
Item weight: 272g/ 9.6oz
Package size: 10 * 8 * 7.8cm/ 3.9 * 3.1 * 3.1in
Package weight: 322g/ 11.4oz

Package list:
1 * Wrist ball
1 * Starting rope
1 * Wrist strap
1 * English instruction