Dynaflex Blue Gyro PowerBall Hand Exerciser + Docking Station

Priced: $47.95 Rated:   - 4 stars out of 5 by 7 reviews.
Dynaflex Blue Gyro PowerBall Hand Exerciser + Docking Station
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Color: Blue
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Dynaflex Blue Gyro PowerBall Hand Exerciser + Docking Station -

The Dynaflex Blue Gyro PowerBall Hand Exerciser + Docking Station spins at up to 15,000 RPM with up to 40 lbs. of torque to help improve your coordination while building the strength of your grip.


Traction and Grip:

  • Get the edge in rock climbing and any other sport that requires control and a strong grip
  • Easy-grip outer sphere allows increased control and prolonged usage


  • Aids in the prevention of repetitive stress injuries such as carpal tunnel syndrome
  • LED lights flash faster and faster as your gyro gains speed for a fun light show while you work out
  • Variable resistance is achieved by increasing or decreasing the speed; therapeutic for hands, wrists, arms, biceps and triceps
  • Included PowerDock docking station activates the gyro to get it up to operating speed in just a few seconds
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Review RatingNumber of Reviews
Weight:14 ounces

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Dynaflex Blue Gyro PowerBall Hand Exerciser + Docking Station Reviews:

Positive Reviews:

Rehab and training

My orthapedic surgeon recommended this as rehab after tendon surgery AND for strength training. I had my doubts due to its gimmickie appearance. This model was the only one the store had in stock, with lights inside and a starting dock station. Anyway I was shocked at how much you do feel it working your finger strength and forearms! I am climbing a 10b (from 10d) again after 2 months of rehab. I like how you can control the intensity of the training vs the "squeezing" devices/balls which you have to buy multiple of depending on range you want to use.
Don B at REI on 02/02/2013

Wrist issues, no more!

My primary concern with this product was how much torque it produces because I can easily just grab a dumbbell and do the same movement. But after using it two days, the counterweight does everything a dumbbell can't and it gets pretty difficult to hold onto if you spin it really fast. My wrist felt a lot better after using this for about 3-4 minutes a day for 2 days. Highly recommended!
myclimbingisalligot at REI on 12/12/2011

Great for increased grip

I don't use this for climbing, I use it to improve my grip for BJJ. It is a great workout for your forearm, wrist, and hand muscles. It is easy to use, easy to take with you, and you can do it while you are resting at night or traveling. You will notice a great burn and fatigue within a few minutes of using. Great product,
Grappling Nut at REI on 11/11/2011

What a great device!!!

The product is extremely versatile and can achieve very specific workout needs in your hands, wrists, forearms, biceps, triceps, and to some degree your shoulders and chest.
Mikey the Skydiver at REI on 04/04/2013

great product

great product i bought it like 2 months ago and saw results after the first use! its great for begginer climbers and advanced climbers.
mwoodall at REI on 11/11/2010

Negative Reviews:

Did Not Work

I bought this for wrist therapy exercises, related to tendonitis (similar to carpal tunnel).

With two new batteries, the base would spin fine with no load. But with the "ball" on, it would only reach moderate speed. This was not enough
rpm for the unit to generate good gyro forces. I could never get it to give me more than a couple foot-pounds torque. Plus the rotation slowed very quickly. I really like the theory, and other people say it is working for them. Perhaps I got a defective power unit.
OldGuyAches at REI on 07/07/2012

Not Durable

I picked up this item today becasue I have a little tendonitis at my elbows from climbing.

At first, this thing worked great. It was a little noisy but acceptable. By the end of the day, it was broken. The axle that the gyro rotates on was letting the gyro rub against the plastic shell which provided enough friction to keep it from working. I will return it tomorrow.
Devin the Climber at REI on 02/02/2014