At first I couldn't get it to work but now it works everytimes.
Its really good value and very entertaining.
I've only had it for a few days but already my wrists and arms feel stronger, I would definalty recommend this to anyone, to build up your strengh or just for fun.
P.S. Just a word of warning, on your first few days don't use it too much as your wrists will ache in the morning!
The centrifugal forces that this gyroscopic "toy" produces have to be experienced to be believed - they are VERY, VERY powerful and just a few minutes each day will soon develop great muscle tone in your hands, wrists and arms. N.B. Due to the extreme forces and the repetitive nature of the exercise there is probably a small risk of "carpal tunnel syndrome" related injuries in some elements of the population (i.e. stop if it starts becoming painful). The basic technique for spinning up the Powerball and keeping it going is easy once you've done it a few times and the online video helps.
I bought this Power Ball, not knowing what to expect.
I spent all one evening trying to get it to work.
I gave up
I went on the Power Ball web site the next night.
I watched a film clip on how to get the ball to work
I got it to work first time after watching clip.
I now can't put it down.
I would Recommend a Power Ball to every one
Its addictive you have to keep picking it up, and having another go.