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Explosive, dynamic, exciting... addictive!
NSD Powerball is a revolutionary new Gyroscope exercise device which provides many benefits with mind numbing inertial forces once you activate its internal rotor!

How fast can you spin it?
An inbuilt speed meter (maybe optional depending on models) makes it impossible to put down because you'll always want to beat your own high score or those of your friends, making NSD Powerball a seriously entertaining & fiendishly addictive way to exercise and get stronger!

Extreme yet sublime...NSD Powerball!
The unique sphere successfully blurs the line between exercise & fun and is suitable for both male and female, young or old. NSD Powerball generates between 1 - 40lbs (or even more with the latest 350Hz model) of resistance depending on rotor speed and will tone the arms & wrists, build muscle or gently rehabilitate damaged limbs with its smooth non impact action. Totally affordable, this is one of world's most popular gift ideas and will instantly satisfy 4 very specific requirements for you as:

  • The definitive instrument for athletes and enthusiasts of many different kinds of sports, hobbies and pastimes (especially Musicians!)
  • A highly addictive and fun to use "gadget" for competitive males & females (could you secure a place on the Top 100 scoreboard??)
  • A revolutionary new fitness product to help tone the arms and shoulders for women or build substantial power and muscle in the arms, wrists, hands and shoulders for men
  • The perfect instrument to gently rehabilitate lower forearm and wrist joints affected by carpal tunnel syndrome, repetitive strain injury RSI, arthritis or previous breakage
NSD Powerball is hand-built & supplied to you with a 25 year Gold warranty + a full money back guarantee

What, why, how?
The NSD Powerball is a hand gyroscope - a tennis ball sized spherical device containing a computer-balanced flywheel which can revolve freely inside. As soon as you put the flywheel spinning (by means of subtly rotating your wrist), it begins to generate an extraordinary force (otherwise known as gyroscopic inertia) which acts immediately against you. Resisting, adapting & intensifying this force is the key to strengthen your fingers, hand, wrist, arm shoulder and even chest! The ball weighs less than 300g (for most models) but can pack a 40-lb punch depending on the speed at which the rotor is spinning - the present world record is over 16,000rpm! It will make even the fittest and strongest people on the planet burn because it is hitting muscles in the fingers, hands, arms, shoulders and chest that you simply won't have used before with conventional forms of exercise.

But it's not all pain!
Most NSD Powerball models have an integrated digital speed meter which measures the number of revolutions per minute made during each spin. This translates into a whole pile of fun if you happen to plant one down in front of a group of guys or girls, each of which will be magnetically drawn to bettering their own last score, or that of their friends, even when they feel their arm is about to fall off! (which it will after about 10 seconds of maximum speed).

Just how fast can you spin it?
Of course, all that wrist & arm building will come in handy ... whether you play golf or tennis (or any of 1000 other sports), ride motor bikes or mountain bikes, play the piano or drums, it doesn't matter - NSD Powerball will put so much power into your fingers, wrists, hands, arms and shoulders that we absolutely guarantee you'll see a dramatic improvement in all sports & leisure activities you perform each day, regardless of what they might be!

But can it generate too much power?
No. Because NSD Powerball only emits resistance that is proportional to the amount of energy you expend trying to spin it up, it can also be used to gently rehabilitate sore or damaged limbs affected by Carpal Tunnel, RSI or even Arthritis. NSD Powerball is totally non impact and will provide soothing therapeutic rehabilitation for many debilitating conditions.

NSD Powerball vs. Dynaflex Powerball
According to our research, NSD & Dynaflex are the real deals. However, NSD makes 2 claims which seem to be missing in any Dynaflex online & printed materials: 1) NSD claims many models are hand-built, 2) NSD provides a 25-year warranty. Moreover, NSD has many more 'higher' models & accessories that are lacking in the Dynaflex line. The Dynaflex gyroball that you can purchase in your local sports big chains are of the lowest models that NSD doesn't even carry. The top-of-the-line Dynaflex Powerball models seem to be equivalent to NSD's Neon Range models. We have compiled the following table to summarize our findings:

Model Dynaflex PRO Dynaflex PRO+ Dynaflex Powerball NSD 250Hz NSD 250Hz Techno NSD 250Hz Signature NSD 350Hz
Speed (RPM) 9,000 11,000 18,000 15,000 15,000 16,000 13,000
Torque (lb) 25 30 40 40 40 40+ 80?
Color Blue-Green Blue-Green Amber or Blue Amber or Blue or Green Blue Light Smoke Chrome
Band Black Black Translucent Black or Translucent Translucent Translucent Black
Lighted No No Amber or Blue LEDs Amber or Blue LEDs Firelines White LEDs No
Speed Meter Compatible No Yes Yes Yes Yes Yes Yes
Scrolling Speed Meter No No No No Yes No No
Cord(s) 1 1 1 2 2 3 2
Dock Compatible Yes Yes Yes Yes Yes Yes Yes
Whistle No No Yes Screamer No ? ?
Weight (g) Lightest Lighter 262 262 262 278 870


  • Dynaflex Powerball & NSD 250Hz Neon Classic are similar. The former line comes only in amber or blue while the latter line comes in amber, blue, green or firelines (Techno model). Accessories between the 2 brands should be interchangeable.
  • NSD 250Hz comes in Classic (without Speed Meter), Pro (with Speed Meter), Screamer (w/ whistle holes) or a combination of the above.
  • NSD 250Hz Neon Range has a unique model called Techno; it emits firelines (ranging from red to blue) plus its integrated speed counter scrolls the data across the screen, very cool indeed & only this model has such meter.
  • NSD Premium line includes 2 models: Signature Series & the 'Mother-Of-All-Powerball' 350Hz Metal Pro. See the above table for more data. Signature model seems to be the top-of-the-line among the 250Hz series. 350Hz Metal Pro is only for the bravest & strongest. ;)
  • NSD has a lot more accessories & replacement parts for their Powerball.

  • Warning - Remember: slow speeds for gentle rehabilitation - high speeds for pure muscle building fun!

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