Generic Odometer Booster Power Led Wrist Ball Grip Round Force Ball

Material: PC + PP 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
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
Package includes: 1 x Wrist ball 1 x Starting rope 1 x Wrist strap 1 x English instruction