Wrist Trainer Arm Exercise Force Ball with LED Lighting & Speed Meter
$14.50
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.
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.
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Wrist Trainer Arm Exercise Force Ball with LED Lighting & Speed Meter
$14.50