Search query: power ball hand exerciser

Product: NSD Roll 'N Spin Rainbow Lit AutoStart Spinner Gyroscopic Wrist and Forearm Exerciser with AutoStart and Multi-Lit LED, Purple
Brand: NSD Power
Color: Purple
Relevance: Substitute
Autostart with internal pre-tensioner, just roll back the rotor in the direction of the arrow on the rotor or against the internal resistance, when sufficient tension is achieved, just release and enjoy
Computer balanced inner gyroscopic rotor for VIBRATION FREE operation at up to 15,000 RPM
Purple Multi-LED Spinners lights up in various colors as speed increases
Hard, impact resistant plastic shell that comes in an attractive PURPLE
Small, compact exercise machine you can take ANYWHERE; Provides up to 24.3 lb-in of torque at 10,000 RPM

Product: NSD Power AutoStart Spinner Gyro Wrist Forearm Grip Strengthener with Auto Start Feature and Battery-Free LCD Counter
Brand: NSD Power
Color: Black
Relevance: Exact
Exercise Anywhere ¡X Compact, hand-held NSD Power Spinner spins at 15,000+ RPM up to 24.9 lb-in (or pounds-inch) of torque for an intense hand, wrist and forearm workout wherever you go
AutoStart Feature ¡X Features an internal pre-tensioner that allows you to start and stop exercising as you please; Just roll back the rotor in the direction of the arrow
Performance Digital LCD Counter ¡X Battery-Free and Self-powered Digital display keeps track of your workout info, including historical top speed and more to keep you ahead of the game; being functional when you reach 3,000 RPM
Designed to Last ¡X Built with an impact-resistant structure, including a military-grade plastic shell and reversible inner tracks for a long life
Easy to Use ¡X Easy even for beginners thanks to the battery-free design and intuitive AutoStart feature; Lightweight, portable and travel-friendly