No starter cord or external battery powered aid needed! We’ve made using the Spinner to strengthen your wrist and arms easier than EVER! The Roll ‘n Spin Spinner incorporates a pre-tensioner inside the gyroscope that allows for a simple roll back to spin up the gyro with enough momentum to get you started. Watch the attached video below to see how easy it is to get “started” exercising with the NSD Spinner!
Please see our Product Feature Comparison chart for more details to determine which Spinner is the BEST Spinner for you!
NSD owns and has all rights, title and interests, including standing to sue for the past, present or future infringement, under United States Patent No. 5,800,311 entitled “Wrist Exerciser” and other U.S. Patents (e.g., No. 7,033,304, No. 7,101,315, No. 7,318,790, No. 7,086,990, No. 7,452,307, No.7,381,155, No.6,623,405, No.7,077,786 and No. 6,942,601).