Gyroscope Force Ball - Arm Muscle Trainer

Features:

• 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.
• Strengthen fingers, wrists, hands, forearms, shoulders, and bicep etc., and also be beneficial in promoting coordination and blood circulation.
• Rehabilitates sore muscles and joint, great for musicians, guitarists, pianists, drummers.
• The counter function allows you to check your rotating speed.
• Simple to start with a pull-string.

Specifications:

• Material: PC + PP
• Color: Yellow
• 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