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

This not for building muscle. But it will aid in recovery. I can see where some wrist and grip strength will increase, but this is primarily a recovery/traing tool. It should increase blood flow and that's a good thing. Seems well made, so time will tell. Pretty easy to get going.

It's a fun little exercise ball and it will work your forearm. The lights the ball produces when it spins are entertaining but much more so at night and/or in a dimly lit room, in a bright room the lights are barely noticeable. The instructions that came with the ball are a little vague, I ended up going to the online Google video to see how to get this ball started.Many years ago I had a Dyna-flex exerciser (I probably still do in a junk and clutter box somewhere in my house) and without reading the instructions I tried to start this ball the old Dyna-flex way, every attempt failed. I then tried reading the instructions that came with the ball, they were vague and unhelpful. I watched the video on how to start the ball which was very helpful but left out the first step.First, place the ball in the hand which you plan to exercise or to get the ball started. This will help you to get the right feel for the ball, if you wait until after the ball tries to start spinning to figure out your hand placement the inner gyroscope ball will lose all momentum as you are trying to figure it out.Second, place both thumbs on the arrows on the ball. One thumb at a time, push down and forward on the ball, alternate walking the ball in the direction of the arrows with your thumbs. In a very short time you will begin to feel tension building up on the ball, push a little further until the ball feels like it wants to spin back against you. Hold the ball in place with one thumb while you find your grip with the hand you plan to exercise. Once your working hand is in place release your thumb hold on the ball and begin working your wrist, you will know within a few seconds if the inner gyroscope ball has been activated.It took me four attempts to get this ball started the first time, it hasn't taken more than two attempts since.

The media could not be loaded. Most complaints on this product are about starting. I think this is either user error or defective units. I'm glad I got the version with LEDs, because it's a good indicator of the speed that helped me learn to start it.The mechanism for starting it is simple. There is a spring that needs to engage, then you wind it and let go. The spring won't engage in all positions. For example, if you put it vertical with the arrows pointing up it never engages. Horizontal as in the instructions, or vertical with the arrows pointing down, it works fine.If when you release the wheel the LEDs don't turn on, or barely do, the winding was not enough. They have to turn on in bright multicolor and you know you got it right. Then it's a matter of learning how to move it to get it to rev faster, basically by opposing its movement.I did touch the spinning wheel multiple times, usually on purpose to stop it. It can hurt if you get your skin pinched, but I don't think it can cause an injury. This is however a downside and hence 4 stars instead of 5. I think it's safe for me, but I would not give it to my kids.

I LOVE THIS WRIST MACINE!!!! It helps bring circulation to the hand, so if you are experiencing arthritis, gout, trigger thumb, trigger finger or wrist weakness, this is the therapy for you. I got this because I was dealing with trigger thumb and needed something to help get circulation into my hand and fingers. This has been the best workout for my hands and wrists and lower arm as well. In just about 30 seconds, it will knock out any pain in your fingers and your veins will pop out in your hands. It takes a little practice to get coordinated with the ball and this is an intense workout. One time I worked out so hard on this machine that I could not do it the next day, I was too sore. Do not underestimate its strength, it says it’s the fastest ball in the world. Many people that I’ve showed this ball to have tried it and don’t understand how to coordinate with it so it takes patience but you’ll get it. This is actually a therapy and I use it multiple times every day. It’s a non-negotiable exercise now for me, and I even put it in my purse to take it on the road with me wherever I go. It is a game changer!

It works as quoted.Wind the spring then move the wrist in a clockwise motion.You will feel resistance if you are on synch. Then it will speed up and make a rumbling noise.Leds will flash.You can feel the strain on your wrist and forearm. No idea if this type of exercise helps my arthritis yet.While it's still spinning you can transfer hands and speed it up again.If you try to move your whole arm or are out of synch with the giro, it won't work.Add a little more time each day until you are used to it.Too long and you may get a strain.

Fun product that is also useful. Love the way it lights up when you get it going. Great therapy tool for both me and my husband. Which is probably why I purchased two as adults don't share toys either. Lol

I guess it does it's job. I am having a little trouble getting it to perform properly. On a few occasions I have got it to "work" but most of the time it doesn't work right. This may be operator error so I will keep trying.

Easy to get started, was able to get it working the first time. Pretty fun to use, good work out for your forearms. I ordered one with the light, but alas, no light, so that's disappointing and the reason for only four stars.