Flashing LED  Auto Start Without String Power Ball,Wrist Ball,Wrist Exercises Force Ball,Gyroscope Ball 

Wrist power ball
 LED Speed Meter Gyroscope Strengthener Power Force Wrist Ball

1/shell material: PC
2/soft silicon gel for comfort control
3/inner led lightening with different color
4/lcd counting display
5/started by a nylon rope
6/optional color for the shell and inner-light
7/. Speed of 8000 rpm when the weight of about 14 kg heavier the faster speed
8/size: 73-75 mm in diameter and height 60-62 mm
9/weight: 280g