---
product_id: 1347216
title: "Essential Crystal Spinner Gyro Ball | Grip Strengthener for Forearms, Wrist & Hands | String Start Design, Up to 18,000 RPM | Portable Wrist Trainer & Workout Equipment | Ideal for Desk Workers, Athletes & Musicians"
brand: "nsd"
price: "€ 63.55"
currency: EUR
in_stock: true
reviews_count: 5
url: https://www.desertcart.sk/products/1347216-essential-crystal-spinner-gyro-ball-grip-strengthener-for-forearms-wrist
store_origin: SK
region: Slovakia
---

# 26.8 lbs gyroscopic resistance 15,000 RPM max spin speed Military-grade durable materials Essential Crystal Spinner Gyro Ball | Grip Strengthener for Forearms, Wrist & Hands | String Start Design, Up to 18,000 RPM | Portable Wrist Trainer & Workout Equipment | Ideal for Desk Workers, Athletes & Musicians

**Brand:** nsd
**Price:** € 63.55
**Availability:** ✅ In Stock

## Summary

> 💥 Spin Stronger, Grip Harder, Anywhere You Go!

## Quick Answers

- **What is this?** Essential Crystal Spinner Gyro Ball | Grip Strengthener for Forearms, Wrist & Hands | String Start Design, Up to 18,000 RPM | Portable Wrist Trainer & Workout Equipment | Ideal for Desk Workers, Athletes & Musicians by nsd
- **How much does it cost?** € 63.55 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/1347216-essential-crystal-spinner-gyro-ball-grip-strengthener-for-forearms-wrist)

## Best For

- nsd enthusiasts

## Why This Product

- Trusted nsd brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Crafted with military-grade plastic, zinc rotor, and stainless steel axle for unmatched durability and longevity.
- • **Portable Powerhouse:** Compact, lightweight design fits in your palm and bag—train anywhere, anytime without bulky equipment.
- • **Pure Torque Power-Up:** No batteries needed—just pull the string and unleash up to 15,000 RPM of intense gyroscopic force.
- • **Total Arm Activation:** Targets wrists, forearms, and hands for a comprehensive strength and endurance boost.
- • **Versatile Athlete’s Ally:** Perfect for desk warriors, athletes, musicians, and anyone craving enhanced grip and wrist health.

## Overview

The NSD Power Essential Spinner Gyro Hand Grip Strengthener is a compact, battery-free forearm exerciser that spins up to 15,000 RPM, generating 26.8 lbs of gyroscopic resistance. Engineered with military-grade materials for durability, it delivers a full arm workout targeting wrists, forearms, and hands. Ideal for professionals, athletes, and creatives seeking portable, high-intensity grip and wrist strength training on the go.

## Description

Essential Crystal Spinner Gyro Ball | Grip Strengthener for Forearms, Wrist & Hands | String Start Design, Up to 18,000 RPM | Portable Wrist Trainer & Workout Equipment | Ideal for Desk Workers, Athletes & Musicians

## Features

- Pull to Power Up – No batteries, just pure torque. Simply pull the string to start! This torque ball hand exerciser hits up to 15,000 RPM, generating over 26.8 lbs of gyroscopic resistance—perfect as a compact, high-intensity forearm strength trainer
- Total Arm Workout – NSD Spinner gyro ball is a fitness equipment that targets forearms, wrists, and hands, providing a full arm workout. Relieve pain and soreness with every spin, improving forearm strength, wrist strength, and overall grip strength
- Who It’s For – Whether you're a desk worker battling wrist fatigue, a dedicated athlete building arm strength, or a musician fine-tuning finger dexterity, NSD Spinner is the best hand & forearm strengthening workout equipment for improving hand endurance
- Engineered for Excellence – Unlike others, it's built with a military-grade plastic shell, zinc rotor, & stainless steel axle and offers unmatched durability. Its modular design allows easy cleaning & replaceable inner tracks may prolong its lifespan
- Precision Made by its inventor – This compact forearm exerciser and hand strengthener fits in your palm and operates without batteries. Use for finger strengthening, wrist workout, and consistent arm strength training anywhere

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Color | Blue |
| Material | Plastic |
| Brand | NSD |
| Item Weight | 0.25 Kilograms |
| Style | Wrap |
| Tension Level | Medium |
| Product Dimensions | 5.5"L x 0.03"W |
| Shape | Round |
| UPC | 848663000001 796793704361 |
| Global Trade Identification Number | 00848663000001 |
| Manufacturer | NSD Power |
| Item Package Dimensions L x W x H | 5.12 x 4.45 x 3.15 inches |
| Package Weight | 0.34 Kilograms |
| Item Dimensions  LxWxH | 0.05 x 0.03 x 0.05 inches |
| Brand Name | NSD |
| Warranty Description | If you'd like a copy of the manufacturer's warranty for a product found on Amazon.com, you can contact the manufacturer directly or visit their website for more information, or you can contact our Customer Service team by e-mailing us at: warrantyquestions@amazon.com. If you choose to e-mail our Customer Service team, please include the full name of the product; the model or style, if applicable; and the URL (website address) for the product's detail page. Manufacturer's warranties may not apply in all cases, depending on factors like the use of the product, where the product was purchased, or who you purchased the product from. Please review the warranty carefully, and contact the manufacturer if you have any questions. |
| Model Name | PB-688 Blue |
| Suggested Users | mens |
| Part Number | PB-688 |
| Model Year | 2021 |
| Included Components | Plastic shells, Stainless Steal Axle, Zinc Rotor |
| Size | Small |
| Sport Type | Baseball, Cycling, Golf, Hockey, Hunting, Tennis, Wrestling |
| Skill Level | Beginner |

## Product Details

- **Color:** Blue
- **Material:** Plastic
- **Brand:** NSD
- **Item Weight:** 0.25 Kilograms
- **Style:** Wrap

## Images

![Essential Crystal Spinner Gyro Ball | Grip Strengthener for Forearms, Wrist & Hands | String Start Design, Up to 18,000 RPM | Portable Wrist Trainer & Workout Equipment | Ideal for Desk Workers, Athletes & Musicians - Image 1](https://m.media-amazon.com/images/I/610CZkJvyDL.jpg)

## Questions & Answers

**Q: Can you take this one apart to clean it?**
A: Yes, you can take the upper and lower shells apart to clean it. Also, you may reverse the two inner tracks to make the Spinner as good as new.

**Q: Do you have to use the string, or can you roll it on the desk to get it moving?**
A: Experienced users may catch the momentum right away and speed it up while the rotor's RPM is slow. Some users make the rotor spin by finger flip or rolling it on their jeans. The string is not required. Just needs a lot of practice for the beginners.

**Q: I just got mine and it has no instructions, I have no idea how to make it spin!! Help pls!!**
A: You quickly pull the red cord that is wrapped around the ball to start the spinning (like a top). It is up to you and your coordination to keep it spinning.

**Q: If the string is lost, can it be started manually?**
A: You may be able to find a piece of string at your local craft store or in the knitting section of your local Walmart. Make sure the line or string that you use is small enough to fit the whole and thin enough to wrap around the ball inside of its casing with out it, the string, getting jammed. I hope this helped 

## Customer Reviews

### ⭐⭐⭐⭐⭐ works great
*by A***R on September 18, 2025*

good product, not hard to use, easy once you get the hang of it and good hand physical therapy.

### ⭐⭐⭐⭐⭐ For someone who hates exercise because it’s boring, this is like a door to the world of fitness.
*by Y***L on May 4, 2020*

I was one of the “tough customers” as far as learning technique goes. It took me 4 hours. I’m not even kidding. That thing people say about swishing a wine glass made no sense to me. I don’t know how you people swish your glasses but unless you’re balancing the base of your glass on an open palm (which is weird!) it meant nothing to me. Still, after 4 hours of YouTube tutorials, I got it! Some of the problem for me was that my hands were so weak that I was underestimating how slow and wide and gentle my turns of the ball would need to be.I won’t lie - I got it so that I could text faster, play games longer, and wear my smart watch on a tighter loop. Nerdiest reasons ever. But it works! My forearm size shrunk literally overnight and I was wearing my watch so much more comfortably. And instead of wearing out after 2-3 hours of Call of Duty or Rocket League, I was going 6-8 hours and playing better than I have in my life.I play 6-8 hours on weekends all the time, but toward the end of that I start breathing a little more, and making more conservative plays, and my fingers hit the wrong button or I hit it too fast or too slow and feel like my mind is getting bored or confused.It turns out, a lot of times MY HANDS WERE TIRED! I’m just not used to thinking of my hands as needing that much babysitting or conscious thought in taking care of them. But now that I am giving them exercise, it’s like I gained a new sense, similar to sight or smell, except this one is for hand fatigue. It’s another HP meter running in my brain of how well my hands are doing. When it gets low I use this ball for a little bit and I’m aces for another several days.As a nerdy type, I never really saw the appeal in working out, it felt like just some annoying motions that you repeat while feeling bored to tears. But this ball takes some thought to control and keeps me amused.I actually got the Diablo Evo Autostart Pro from Powerball as an upgrade to this because I liked it so much. Keeping track of the gyroscopic motion is a challenge, like a game in itself, and that makes exercise less boring to me.To people who aren’t as sheltered as I am: Yeah, I know this review comes off as “Wow, this idiot sounds like they just discovered America!” Yeah, you’re right. But there’s a lot of people like me who don’t try new things until they’re coaxed into it, and I’m glad there are products like this, which help us introduce us to new lifestyles. :)

### ⭐⭐⭐⭐ More than a novelty, but still not the best
*by L***Y on February 11, 2014*

First, let me say that I got this as a gift. I had been eyeing it myself for well over a year and just couldn't pull the trigger because this really doesn't look like any other training tool out there. Still, I like new and I'm willing to try just about anything once. So I was stuck in limbo until my wife decided that it had hung out in the wish list long enough.My impression was that this was marketed as a grip strengthening tool of some sort. That's probably a miss on the part of the marketing department. What it does is more like mud running for the forearm muscles. It's an endurance trainer with resistance, and actually it does a good job at this once you catch the drift. The circular motion that the wrist must perform to make this work seems like it would also be good for rehab or warm ups if done in shorter durations and at slower speeds. So, in the right context this becomes a great tool. But it isn't really a grip strengthening tool unless you have the strength of a toddler.How it works: essentially this is a fly wheel. As RPMs increase that fly wheel resists changes of direction (centrifugal forces, Newtonian physics... Science!). This is what creates the resistance aspect. The circular motion of the wrist keeps the fly wheel spinning which creates an endurance aspect. Stop rotating your wrist and the fun ends as the fly wheel slows.Bottom line, it's not a bad little fitness gadget, but probably has limited use outside a physical therapy application unless you are in a sport where lots of forearm endurance is key... Like rock climbing. There isn't time to do everything, and what time you have is probably better spent doing something else. That's why I gave it 4 stars, fun and works... But what's the point?

## Frequently Bought Together

- NSD Power Essential Spinner Gyro Hand Grip Strengthener Wrist Forearm Exerciser
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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-02-03*