NSD Power Essential Spinner Gyroscopic Wrist and Forearm Exerciser

Amazon Price: $19.52 $19.99 (as of February 24, 2017 10:00 pm – Details). Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on the Amazon site at the time of purchase will apply to the purchase of this product.

Innovative Gyroscopic Resistance Training makes it easy and fun to exercise Anywhere

Wrist movement
View larger

The innovative exercise machine will allow you to exercise and work-out ANYWHERE!

Don't let the small size fool you. Pick one up, spin it up to 10,000+ RPM and you'll be amazed by the amount of physical work required to keep it spinning at speed, using such a small compact motion. Go ahead, feel the burning forearm after a minute of use. Because the resistance is provided by angular momentum built up through a spinning mass, a few minutes a day on our Spinner can be equivalent to hours of full motion work with a dumbbell or a curl. For athletes, amateur and professional alike, strong grip and forearm provide the ultimate in power, speed, and control in just about everything you do. Be it golf, tennis, baseball or just about any sport that involves the use of hands and arms, using the NSD Spinner will allow you to hit it harder, hit it faster and hit it straighter. Besides the physical benefits, it is just downright FUN to play with. Challenge a friend. Challenge a co-worker. Or a family member. See who can make the Spinner spin faster or glow brighter. See who can keep their Spinner spinning longer. Or break it out during "break time" at work as your co-workers gather to watch in awe. You can have fun while exercising, or exercise while you have fun.

Tips on Operating your NSD Spinner

No battery required; Just like riding a bike! Your hand is the battery of this device. The motion of your hand rotating the Spinner is similar to making ice cubes swirl inside a glass. The essence of operating the Spinner is not about how fast you rotate your wrist. It’s about how to synchronize your wrist rotation to the momentum and timing the rhythm of the rotor’s gyration. The faster the rotor spins, the easier it is to operate. Make sure you start the Spinner with sufficient speed.


*Keep your Spinner from dusty environments. Don’t put your Spinner on the carpet or any fabrics. Dust may be brought into the internal surface of the shell by the rotor and make the inner tracks dirty. Eventually it would make noise as the rotor spins. *Wash your hands before using the Spinner. Sweat or lotion on your hands will decrease the capability of speeding up the Spinner's RPM. The Speed is increased by the friction between the spinning rotor and the inner tracks. Never lubricate your Spinner. Oil is the killer of its friction. *Clean your Spinner periodically. To clean the Spinner, take off the rubber band, unscrew the shells with a precision screwdriver, insert a coin into the gap between the upper and lower shells and then twist the coin to open the shells. Once you disassemble the Spinner, (remove the digital counter first if your model is equipped with it) use water ONLY to clean the tracks and shells and then dry the parts before re-assembling. For PB-688 series models, you may also reverse the two inner tracks to make your Spinner spin as smoothly as new.

Verify Genuine NSD Products

Counterfeiting is a form of fraud that deceives you into buying poor quality and unreliable products by stating otherwise, and offers none of the quality and reliability that comes with an Original NSD Power Spinner. To protect you against such fraudulent practices, NSD has taken steps to ensure that the products you have purchased are adequately protected with security "NSD" marks on the shell and the Printed Circuit Board, PCB, in the Digital Speedometer to prevent counterfeiting. In addition, all NSD Model Numbers start from two capital letters "PB" (ex. PB-688AMLC Purple). On every single packaging box and user manual, you can find mainly international patent numbers that NSD was granted. You may also spot a counterfeit by the following: Missing NSD logo on product or packaging; Signs of repackaging; Rusty PCB in the digital counter; Questionable price and Poor quality. ***To help consumers distinguish genuine NSD products from knockoffs, NSD markets and promotes its products with the names, "NSD Spinner" and "NSD Power Spinner," in North America. ***

NSD has developed many patented innovations below since 1992:

Classic NSD Power Spinner, PB-188 series, in 1993 Battery-powered Speedometer, SM-01, in 1998 Fluorescent NSD Spinner powered by an inner generator, PB-188L series, in 1999 LED-Matrix displaying top speed Spinner, PB-188P, in 2004 Formula One cars' engine sound effect Spinner, PB-188S, in 2006 Metallic NSD Spinner, PB-388 series, in 2008 AutoStart NSD Spinner, PB-188A series, in 2010 Multi-color lights NSD Spinner, PB-188ML series, in 2011 Bluetooth enabled NSD Spinner in 2012 AutoStart & Fluorescent featured Spinner, PB-188AML & PB-188AMLC, in 2013 Precision Sterling NSD Spinner, PB-588 series, in 2013 Break-Resistant NSD Spinner, PB-688 series, in 2013 Battery-free with Amber Backlit LCD Screen Speedometer, SM-02, in 2013 AutoStart & Break-Resistant Metallic Spinner, PB-888A series, in 2014

The NSD Highest Standard

Decades of NSD research have achieved performance innovations for the world’s ATHLETES, TRAINERS, and RSI SUFFERERS. In the process, NSD has raised the bar of durability and functionality, and our inventions now serve the industries of Health, Fitness and Sports. Each and every NSD Spinner that leaves our factory has to meet the toughest quality standards in the industry. Our manufacturing and assembly processes are monitored closely and each Spinner is QC tested vigorously to ensure you are getting the highest quality product available. NSD Spinners are certified under the stringent REACH and RoHS directive established by the European Union for the protection of human health and the environment from the risks that can be posted by chemicals. This is the NSD Standard.

Compare Products

PB-688 Amber

PB-688C Green

PB-688LC Blue

PB-688AC Black


Ergonomic Grip

Military-Grade Plastic Shell

Patented Break-Resistant Structure Design (Worry-free to drop)

2X Lifespan; Reversible & Renewable inner tracks

Battery-Free & Amber backlit LCD Display Counter SM-02

AutoStart Internal Pre-tensioner

LED Lights powered by an inner generator

Speed Variable Multi-colored LED Lights

Product Details

  • Shipping Weight: 12.6 ounces
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B00A7Q1GSC
  • Item model number: PB-688-PARENT

Customer Reviews

Obviously entry level, but VERY effective!

51 people found this helpful.
 on March 23, 2013
By zKi Comp
I was able to pick up this NSD Powerball for $17 here on Amazon and what a steal!

Tricky to figure out at first but once you get going, it’s great.

3 people found this helpful.
 on May 24, 2014
By Kelly
I’ll say right off the bat that I’m an extremely unfit person. Until recently, I’ve never exercised so that may undermine my review. For the first half hour I was messing with it, I felt like a complete idiot. I couldn’t get the motion right and my husband was looking at me like I was nuts. It took me a while of messing with it to get it to work right. But once I was able to get the right “feel” to the rotational movement, it was great. It’s convenient. I can pop it in my purse and take it to work with me. The movement is kind of addicting so I set a timer so I know when to say when.

Really works and well made

One person found this helpful.
 on July 31, 2016
By Richard Mcknight
I broke my arm last summer and needed a simple way to build up strength in the arm. I can do this while watching TV. I do it for one minute with one hand, then switch to the other while it’s still going, then back again for two minutes each hand. It took me a bit of practice to get the hang of the spinning. You get the thing spinning with a string, like a top. At first, I thought the spinning accomplished by pulling the string was all there was to it and was disappointed when it stopped spinning within seconds. The initial spinning is kept going and increased by turning the wrist in just the right way. Simple when you know how!

nicely made – works well

 on November 27, 2016
By nom de plume
I read a few reviews of competing models and went with this one. It seems to be very well made, and operates smoothly. It does make a whirring sound when you really get it spinning, which I’m quite sure is normal for anything like this. It takes some practice, and I’ve used the “shoe lace” they include to help you get it spinning. I found an analogy useful to visualize how to make it work, and that is to use a motion that is like holding a glass of ice at the top, and swirling the ice in the bottom of the glass. My biggest mistake is to “swirl” it too fast when I try to start it up, when you can get ahead of the gyroscopic forces – it’s hard to describe how the relationship between the forces and the spin rate feels.

Strengthens Wrists but Can’t Do It for too long without becoming achy

 on December 24, 2014
By danc
So I’ve been playing violin and piano for awhile along with using a computer a lot and I developed a bad case of tendonitis. I wear wrist braces on both arms during the night to help prevent my wrists from bending. I’ve had this condition for a couple months and had to stop playing piano and in orchestra for a couple months. I decided that I can’t wait any longer for this to heal because I was upset that I couldn’t do anything without severe wrist pain that lasted for hours. Several of my family members told me that I should exercise it and some people told me about those balls that you squeeze in your hands. So I tried the exercises which didn’t really work and I didn’t want to spend money on squeezing a ball that may or may not work. So I found this and decided to give it a try. I was skeptical about buying it because of the lack of costumer reviews.I decided to give it a shot because i heard it was good for rsi(repetitive stress injuries). So when I first got it I found it very hard to get it started. You have to put the string on similar to yo-yo and pull HARD while spinning your wrist in a motion similar to opening a door knob. After 30 seconds of this my wrists were tired and sour. They were sour for the first two weeks after using this once a day and one minute on each hand. Then on the third week I discovered that I could actually do it for a full minute. I noticed that when I went back to play violin that my wrists didn’t hurt as much after playing as they used to. My hands also felt more relaxed and I discovered that I had less wrist pain and I could do more activities for longer without any pain. So I am going on my fourth week after using it for one minute on each hand once a day. I notice that I’m having more trouble than before doing it for a full minute because I guess that it’s wearing out from constant use and it takes more force to spin. My wrists are also starting to ache again and fell very tired. So I am going to try to do it every other day instead. I will post an update on how my wrists are in a week or two from constant use.

Great for grip strength!

2 people found this helpful.
 on October 10, 2013
By Michael E.
I got this because I have a torn extensor tendon (aka tennis elbow) and was losing a lot of grip strength. I’ve been going thru physical therapy which has helped a ton but I needed something to do on my own. I do this at work during lunch and it has become so popular that I have to share it with co-workers who have carpal tunnel. Definitely makes a huge difference in your grip strength and wrist/forearm strength. Takes a bit of time to “get used to it” but once you get the rhythm down it becomes easy. Highly recommend it for anyone with repetitive stress injuries who want to develop strength or for anyone who just wants to develop hand/grip strength overall. I’m to the point now that my forearms burns in a way that I can’t get to happen any other way. The ball literally starts to pull itself out of my hand after a while.

Once you get the hang of it, it works well.

One person found this helpful.
 on October 24, 2015
By Rick M.
I didn’t know how to use it at first so I chalked it up as a lesson learned but one day my son picked it up and said whats this, I said it’s an exercise ball that doesn’t work and as the words left my mouth he was using it just like the guy in the video. Surprised the heck out of me. He then showed me how to use it and I’ve been using it ever since. Smartass kid. Anyway apologies for the first review, it actually works well and I’m pleasantly surprised.

Leave a Reply