... one start string New Power Gyro Force Wrist Ball With LED Light Function: 1.New Power Gyro Force Wrist Ball With LED Light2.A grade ... 3.Great benefit for musicians,guitarists,pianists,drummers.4.Rehabilitates sore muscles and joints. With 6-piece flash LED light, lights come ... with blueHandle strap come with PVC or silicone , Black or White Silicone for your choice. ...