Function:<br>1.The world's most prominent artificial power purely mechanical device, no battery and no power, no electromagnetic radiation, natural and induced magnetic field generated by the magnetic analog of celestial bodies, and by the rotation of the wrist produce a strong driving force, through human control, any mediation motion rhythm and intensity, the faster the rotation kinetic energy generated stronger <br>2.Perfect exercise gadget for sports like golf, tennis, squash, cricketm badminton, baseball, bowling, basketball, motocross, mountain climbing.<br>Increases strength in fingers, wrists, hands, forearms, biceps, triceps, ligament and shoulders.<br>3.Great benefit for musicians, guitarists, pianists, drummers.<br><br>Package include:<br>1x Powerball with LED<br>1x Start rope<br>1x Specification<br> <br>Size: 7.2 x 5.6cm<br>Rope Length: 40 cm<br>Weight:  255g<br>Max RPM: >12000RMP<br /></p> <br /></p><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/56cf142d39f3e748695beb2c-2-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/56cf142d39f3e748695beb2c-3-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/56cf142d39f3e748695beb2c-4-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/56cf142d39f3e748695beb2c-5-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/56cf142d39f3e748695beb2c-6-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/56cf142d39f3e748695beb2c-7-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><p style="text-align: center;"><p style="text-align: center;"><p style="text-align: center;"><p style="text-align: center;">