Review on Strengthen your Forearms with the NSD Power Lit Spinner Gyroscopic Exerciser - Boosted by LED Light Innovation by James Gregg

I had a weakness in my arms (probably due to RA) and bought this to strengthen my arms. It takes some time to get used to using it. Once you start the spinner, you need to spin your wrist. It's all about timing, so it takes a little practice, but once you get the hang of it, you can control the resistance by rotating your wrist (fast, slow, large, or tight circles). .I love it and you get a great workout in a very short time without affecting your joints.