I have used the other major brand who's name escapes atm, its 3 letters or something, and was glad I went with the unknown this time. this one is easier to keep spinning at lower speeds so u can go longer. I find at full force either arm won't go two min even. I like the lack of lights so I can use it whilst driving at night.

Looked at the 1 star reviews, and was prompted to post 5 star. Don't know how long my NSD Spinner will last; I am using it several times a week. I liked the spinner so much that I purchases a second one for a friend in wrist/arm rehab. We are both enjoying this immensely. If it breaks, I will probably purchase a more expensive one, probably from NSD, as looking at the one star reviews, I find NSD's customer service responsive.

I love this little gadget. I can spin this while I'm bored at work or if I'm watching something on Netflix. It definitely gives my arms a good burn. I would recommend this to all the rock climbers out there who want a little forearm exercise. I think it also helps strengthen wrists too.

I bought this NSD Power Essential Spinner Gyroscopic Wrist and Forearm Exerciser on a whim after trying numerous exercises, wraps, lotions, salves and meds to deal with experiencing prolonged pain from forearm muscle damage. My expectations were low so I've been wonderfully surprised to find that the pain I've been experiencing for near a year has gone down greatly in the course of less than a couple of weeks. I'm being careful and am following instructions I was given. No more than thirty seconds at a time, for three times a day max, with a minimum of an hour in between has resulted in something wonderful happening. I don't understand what it's doing, but I'm thankful it's doing it. If all's good at the end of two weeks, I have a green light to increase from thirty seconds a pop to a whole minute. A minute might not seem long, but I am telling you, that if you haven't been doing any wrist or arm muscle strengthening, a minute will be a goal that you won't realize right off the bat. Yes, it takes time to get it going right. It was downright annoying the first couple of days, but like anything, keep trying it gets easier and easier. The spinner came with 2 starter cords and I've lost one already when it flew off after a particularly hard pull. Another surprise was realizing that I'm feeling it in my bicep too. When I get up to some real extended time for multiple times a day, I think I'll be seeing some major toning up all over my arm, not just the wrist and forearm. Need to workout your arms a bit? I highly recommend the NSD Power Essential Spinner as an introduction to toning and a prelim to lifting.

I love using this exerciser. It's a lot of fun and if you spin it as fast as you can it will work your forearm and wrist out well. The only change I would make would to buy one that has the auto start feature so you don't have to have the string. You can start this one without the string but it's pretty hard to do sometimes.