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

I need to work on my grip while at the range. And after only a few minutes with this gyro ball, I already FEEL like this is going to help me greatly. Just a few seconds in and I feel the workout from my hand, to my upper chest. Of course that depends on how you're using it but even if you're just fidgeting, it'll give you a good workout. My veins started popping out within about 3 minutes. I'm a righty so doing this with my left hand is a tougher challenge. But now I want to work and practice with that one more. If you're looking for a workout while you're sitting and doing other things, this is what you're looking for. Get it.

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.

Hasta el momento muy funcional y buena adquisición.

Works great. You can really feel it in your forearm.

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

Very easy to start. I have the older model, it was a pain to get it to spin. This is wonderful

I owned a power ball quite awhile back and “lent” it to a friend. Since I’ve had issues in to outer forearms since my lifting days, I wanted to get another one of these gyro balls. This one works great and is way easier to start up than my older version. I use it three at least three times a day everyday and then take a day off. I could feel the effects from using it all through my upper body (arms, shoulders, back and chest). Wasn’t an uncomfortable burn or anything. I can just tell which muscles were being engaged.

I could not get it to work for me but I am elderly and do not posses the strength in my hand to make it work.