GOZATOAuto-Start Wrist Power Gyro Ball, Wrist Strengthener and Forearm Exerciser for Stronger Arm Fingers Wrist Bones and Muscle with LED Lights

This is an excellent product. I bought two of them and so far I’ve had no issues. It took a day to develop the sensitivity needed to keep the unit rotating. Once spinning it only takes a little bit more effort to really get it spinning and it becomes one tough cookie to hold on to.Keep in mind this is NOT a perpetual motion machine. If you stop spinning the gyroscopic ball with your finger/wrist/arms it will slow down and stop fairly quickly. It is tricky to get the feel of it however in time you will be doing circle variations, counter circles, figure 8’s, and finger tip rotations. If you hold it with the internal ball upwards it will slow down a lot faster so KEEP THE BALL OPENING DOWN.A common complaint in reviews is that the wind up gyro starter doesn’t work or breaks. Both of mine have worked just fine. I am assuming that most of the people who have had issues with the wind up starter A.) did not read the instruction paper, B.) failed to hold the ball in place when winding it up, and/or C.) excessively over rotated the starter beyond it’s stopping point. I expect a little common sense would go a long way in resolving these issues.I am very happy with the purchase and have convinced several other people to buy one. The unit has a quality build and I highly recommend it.

Well made. Easy to use. With the price. Seems durable. Grip seems useful and comfortable , noise level is as expected. I don’t need the LED but it’s pretty cool. Excellent forearm and finger exercises.

I have only had it for a few days, so I don't really know what to expect at this point. But, it does work well and I have had no trouble getting to started or keeping it going. Hopefully, it will help.

I've had multiple NSD Spinners including the autostart version as well as heavy metallic variants.I'm currently recovering from an elbow injury and trying to strengthen my forearm to help with the recovery.Here is my take as a former NSD Spinner user (can't find the autostart and lost the starting string for the metal version).Build Quality: Compared to the NSD Spinner, this is noticeably subpar specially with the inner componentNoise: This one makes quite a bit of ruckus when you stop rotating it. I don't know if it's due to the component seeming unpolished or this is normal for this particular model. While it's being rotated there is almost no discernible difference between this and the autostart models of NSD Spinner. Smoothness of the metal one was on a different levelFelt weight/resistance: It's a nice medium between an autostart and metal versionI bought this to start and possibly move up to a different model in the future. I think i will hold up and try to refurbish the metal version of spinner that was left neglected for yearsEDIT: Starting to get instances where it can't wind up to start the gyro. Sometime it seems to help when you rotate it manually by hand then reversing it to see if there is felt resistanceEDIT: This thing was making such a ruckus when it get spun up to a decent pace. I went ahead and bought a NSD Spinner. Oh boy what a difference. Skip this garbage and buy the proper spinner. It's a night and day different in the way it spins as well as the lack of noise with NSD spinner. I think i can actually take it to work and spin it in the office without someone from another office across the hall inquiring about it

Excellent product. I'm definitely buying a few more for family and friends. I feel the difference in a couple days. Convenient way to exercise and tone

It gets easier to "start" once you get used to it. It is pleasant to use and you can feel where in your forearm and upper arm is getting use. Bought this generally for strengthening the forearm, wrist and hand for general use and for use with guitar/ piano . It is a little fun to use so the only downside is trying to NOT overuse it. More detailed instructions about how often to use and rest in between reps would be appreciated.

The Bad:1. In half a week of consistent use the polished mirror metal finish has worn down where skin contact occurred. (pictures for reference)1.5 It is to be expected when hand oils are introduced however, it makes me sad that it has changed so rapidly (any advice on restoring/polishing would be apprciated)2. After a week of consistent use the provided wrist strap broke.(At the moment this is an iritation and I am currently waiting on an order of wrist straps from amazon)The Good:1. I love the heft of the machined steel product and it feels like a good quality item.2. using the gyro ball is a fun experience and has encouraged me to exercise daily.Overall:1. This product has encouraged me to keep a daily exercise routine, even for something as small as rotating my wrists.2. I feel like the product is a quality machined item (steel variant)3. I am dissapointed that the wrist strap broke so easily.4. I have not noticed any amazing grip or muscle benefits yet, after another couple of weeks I'll be sure to update the review.

I saw an infomercial about this Japanese device and was intrigued. It was much cheaper on Amazon, so I ordered one. I have had it for seevral weeks, but I think i just today learned how to get it spun up so that i get some reistance from it. You push this one till the gyro is at it's maximum and then you release it. The key to really getting it wound up is to shake it in your hand like you're throwing a curve ball. So a North South motion rather than East West. This really spins it up so that you can get some significant resistance and improve your arm strength. For the price I thinks it's a great buy and will definetly improve your grip if used reguarly