JIN BD Auto-Start Wrist Ball, Upgraded Gyroscopic Forearm Exerciser and Grip Trainer for Hand, Finger & Arm Strength Training, Wrist Strengthener with Storage Bag for Home Gym & Sports Fitness

I got this to help with my sore wrist since I am on the computer all the time. It takes a little time to get used to. At first, it wasn't lighting up, but I later learned it was because I wasn't moving my wrist in the right way to maintain the momentum. It needs the right kind of wrist action to keep the gyroscope moving and light the lights. I did a quick search on YouTube.com and found great instructions on how to use it. This is a great workout for the wrist, and it helps me overcome overuse from typing or using my mouse. It's also a lot of fun in general! Never hurts to have fun when you're exercising!

This thing is amazing. Took 5 seconds to get the hang of it. Will be buying another

Because it is not so easy to use, ends up not being used. I returned mine because I think it was defective and extra hard to make it work.

Great rest exercise. It really doesn’t feel like you’re doing much but then you do feel it would highly recommend.

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.

I sent this back. Had bought for grandchild but it just didn't seem to do what it was supposed to. Couldn't really make it work. Pretty colors but not for us.

Just got this today, spent fifteen rather frustrating minutes trying to get it to work, came back to see what reviewers said—kudos to user JD Ruthless who went over the motion needed. (Read on for my version of the directions.) I have injury-related arthritis in my right wrist, and as a musician it’s been giving me trouble as I get older. Don’t know about long term, but, just from this afternoon’s first try, I have a pleasant ache of exercise and I think it will be useful for the atrophy of muscle strength due to the arthritis disuse. Directions: If you too have problems getting it going, here’s what I took away from JD’s review: bend your elbow so your forearm and hand are parallel to the floor, and the back of your hand facing up. Now gently flip your thumb up and pinky down, allowing your forearm to rotate with your hand. Then gently return the thumb down and the back of your hand up. Repeat. That’s the motion that works to get the ball rolling and stay rolling. After you’ve figured that out, try it with the ball in hand and safety strap around your wrist. After THAT, wind up the ball with your thumbs, winding in the direction of the arrows, get it into position while holding the ball still with your thumb, get it into position and start up the ball motion, using the rotations of your hand. The motion is actually rather gentle and smallish, no need to jerk your hand around. Once you have the motion and ball going, you can change the position of your hand and arm to work different muscles. Great stuff!

When I first got my wrist ball, I was convinced, after about 10 minutes of working at it, that mine was defective. It just wouldn't spin. I tried watching a YouTube video, copying the movements...nope. So I tried another video, and another, and another and FINALLY found a video where the person explained it just right, and by golly that ball came alive in my hand! Now I play with it daily, I love the lights, the movement, and the way the ball seems to get heavier the faster it spins. I am 72.

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Good for strength building, durable and value

Ótimo pra treinar a força do pulso e antebraço!

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