Wrist Trainer Ball Auto-Start Wrist Strengthener Gyroscopic Forearm Exerciser Gyro Ball for Strengthen Arms, Fingers, Wrist Bones and Muscles

Because I like the concept behind this device Ive bought 2 products with deferent spec !, first one I bought for 25GBP thinking should be better quality then 15GBP? In first one you need to use a string to get the ball to spin and it'd have flashy manual and so on ,not easy to use but it does work. The cheeper one looked like you don't need string or battery just thumbs to get the ball spinning and that was something more interesting to me and I was thinking probably is going to be waste of money because sounds too good to be true...Wrong! The manual is a joke that's for sure! but the product itself a great value I highly recommend it.

Very badly made, rusty, and broke within the first day of use.

Beware it doesn't light up as the picture misleadingly suggests. Not a problem for most but just to be aware. It does the job but sometimes, maybe one in every three times of winding it, it doesn't actually work. Not sure it'll last long. Also was weirdly wet/seeping something when it first arrived which was unpleasant

The instructions were minimal no help in how to fit wrist strap.

Bought this for my husband but feel like I have wasted money. It just doesn’t work.

These were a popular item a handful of years ago and if you haven't tried one, you really should. They're surrpisingly hard work and great for exercising forearms and wrists either for strength or rehabilitation, as well as just being plain old good fun.brilliant stocking filler idea.

Doesn't light like he thought, but didnt have it going for too long

Once going it was fine but getting the thing to start wasn't easy. I found I needed to get the internal ball rolling pretty fast, which was very difficult using the technique advised (using my thumbs). I tried rolling it along a flat surface, as I had done on one I was shown a few years ago, but the bands on the ball (with the arrows showing the direction of rotation) are quite slippy so it was still difficult getting it up to speed.I ended up returning for a refund and bought a different version that has a string that you insert into the ball, wind it around and pull. Much better to get the speed going, which makes it so much easier.