hi im a guy from Denmark who just bought one of your powerballs, and I am really happy about that investment

When I started my Max rpm was 10.000, but now, only after 9 dayes it has raised to 11.900 , I can really feel how my muscles are working, and already now I can use it for longer times without my arm-muscles hurting.

again, I am really happy with this product!

Jesper k