---
product_id: 2100404
title: "PB-688AML Purple"
brand: "nsd power"
price: "453.85 DT"
currency: TND
in_stock: true
reviews_count: 13
category: "Nsd Power"
url: https://www.desertcart.tn/products/2100404-pb-688aml-purple
store_origin: TN
region: Tunisia
---

# Built-in LED lights activate on spin Up to 18,000 RPM gyro spin Military-grade plastic & stainless steel axle PB-688AML Purple

**Brand:** nsd power
**Price:** 453.85 DT
**Availability:** ✅ In Stock

## Summary

> 🔥 Spin Stronger, Shine Brighter: Grip Training Meets High-Tech Glow

## Quick Answers

- **What is this?** PB-688AML Purple by nsd power
- **How much does it cost?** 453.85 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/2100404-pb-688aml-purple)

## Best For

- nsd power enthusiasts

## Why This Product

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

## Key Features

- • **Dynamic LED Glow:** Visual feedback with vibrant LEDs that light up your workout sessions.
- • **Compact Powerhouse:** Portable design fits perfectly in your hand for on-the-go forearm training.
- • **Rehab & Performance:** Ideal for athletes and recovery alike—boost grip strength, reduce pain, and enhance blood flow.
- • **Effortless Auto-Start:** Spring-loaded mechanism ignites spin instantly—no cords, no fuss.
- • **Precision Engineering:** Military-grade materials ensure smooth, vibration-free resistance every time.

## Overview

The NSD Manual Spring Assisted Start Spinner Gyro Ball is a premium hand and wrist exerciser designed to deliver up to 18,000 RPM and 24.9 lbs of gyroscopic force. Featuring a spring-loaded auto-start, built-in LED lights, and durable military-grade materials, it offers smooth, vibration-free resistance ideal for grip strength training, forearm workouts, and rehabilitation. Compact and portable, it’s perfect for professionals and athletes seeking effective, engaging wrist and forearm conditioning anytime, anywhere.

## Description

Combine our most popular features with the AutoStart and Multi-colored LED. Our Roll ‘n Spin Rainbow Lit Spinner incorporates new Auto Start feature with a beautiful light show to make your exercise routine even more fun. No messy strings, no flimsy battery powered starter station, just wind it up by pulling it back, and we’ll generate enough momentum to get you going. Watch the attached video above to see how easy it is to get “started” exercising with the NSD Spinner. This model is compatible with NSD Digital speedometer SM-01 and SM-02.

Review: Lot's of fun. The science of the gyroscope applied to exercise. - I love this. It is essentially a gyroscope. The ball contains an inner ball which is weighted and rests on gimbals You don't need a string to start it. It has an internal spring. Once wound up, the ball beings to turn, By rotating your wrist in a particular way best learned by viewing a video, the speed of the ball will increase. As the ball increases in speed, the laws of physics dictate that attempting to rotate its spin axis by applying torque, the gyroscope will try and rotate at right angles to the force you apply. This is called gyroscopic procession. This is why gyroscopes are used in navigational systems on earth and in space. They want to stay in position and by so doing, there is an initial frame of reference. As the speed of the gyroscope increases it gets more and more difficult, that is you need to apply more force to get the ball to spin faster. As a result you are putting stress on the muscles of the wrist and forearm...exerciser. It is a novel way to strengthen your arm and is just plain fun. I recommend you also purchase the NSD Power SM-02 Precision Multi-function Speedometer so you can measure how fast you can get the gyroscope to spin.
Review: Customer service non-existent - This spinner worked well for about a day, at which point I disassembled it to install the spin counter attachment. Once I got it apart I realized that the internal mechanism was slightly different than every other guide I could find online; it included a separate white plastic ring which no other model seems to have. Long story short, I can't seem to figure out how to get it put back together in a way that will actually engage the gyroscope. I looked online for a guide and could find nothing. I used their customer support form, which failed to work with an error about trying again several times. I called their customer support number, which rang until it reached a voicemail that hadn't been set up. I can not seem to make contact with NSD in any way to get my spinner working again. Poor form.

## Features

- Light Up Your Workout – This thumb-wind start, spring-loaded gyro ball glows with built-in LEDs that activate as you spin. No strings—just wind the wheel to ignite 18,000 RPM and 24.9 lbs of gyroscopic force. A glowing grip strength trainer for fun and fitness
- Dynamic Responsive LED Feedback – Built-in lights respond to your speed: Red at low spin, Purple at 3,000 RPM, and Blue at 8,000+ RPM. Track your performance in real time and push your limits with this interactive grip strength trainer
- Designed for Active Hand & Wrist Training - This is a performance-based forearm exerciser & gyroscopic wrist strength trainer that requires real hand and wrist engagement to operate. Ideal for athletes, musicians, climbers, and rehab users with basic grip strength
- Stop Control – The Thumb-Wind Auto-Start feature allows you to stop instantly by just reversing the rotor, which ensures smooth transitions between sets, making it a top choice for arm strength trainers & forearm exercisers looking for full control during workout
- Smooth, Stable Performance – Unlike alternatives, this gyro ball spinner is built with military-grade plastic, Zinc Rotor & stainless steel axle for rock-solid balance. No rattles, no vibrations—just consistent resistance for forearm workout

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B007XVCRW8 |
| Best Sellers Rank | #41,387 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #101 in Strength Training Wrist & Forearm Strengtheners |
| Brand | NSD Power |
| Brand Name | NSD Power |
| Color | Purple |
| Customer Reviews | 4.1 out of 5 stars 352 Reviews |
| Global Trade Identification Number | 00848663000308 |
| Included Components | LED light, Megnet, Plastic Shells, Zinc rotor, copper wire, stainless steel axle |
| Item Dimensions L x W | 4.7"L x 4"W |
| Item Shape | Arrow |
| Item Type Name | Hand, Wrist and Forearm Exerciser |
| Item Weight | 9.6 ounces |
| Manufacturer | NSD Power |
| Material | Plastic |
| Model Number | PB-688AML Purple |
| Part Number | PB-188AML Purple |
| Style | Wrap |
| Tension Level | Heavy |
| Tension Supported | Heavy |
| UPC | 848663000308 |
| Unit Count | 1 Count |
| 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; … |

## Product Details

- **Brand:** NSD Power
- **Color:** Purple
- **Item Weight:** 0.6 Pounds
- **Material:** Plastic
- **Style:** Wrap

## Images

![PB-688AML Purple - Image 1](https://m.media-amazon.com/images/I/61WYH6umRoL.jpg)
![PB-688AML Purple - Image 2](https://m.media-amazon.com/images/I/51giN7FChVL.jpg)
![PB-688AML Purple - Image 3](https://m.media-amazon.com/images/I/71Jhy5SVbSL.jpg)
![PB-688AML Purple - Image 4](https://m.media-amazon.com/images/I/61nMzePYJ+L.jpg)
![PB-688AML Purple - Image 5](https://m.media-amazon.com/images/I/61da-WMskOL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Lot's of fun. The science of the gyroscope applied to exercise.
*by A***. on August 7, 2016*

I love this. It is essentially a gyroscope. The ball contains an inner ball which is weighted and rests on gimbals You don't need a string to start it. It has an internal spring. Once wound up, the ball beings to turn, By rotating your wrist in a particular way best learned by viewing a video, the speed of the ball will increase. As the ball increases in speed, the laws of physics dictate that attempting to rotate its spin axis by applying torque, the gyroscope will try and rotate at right angles to the force you apply. This is called gyroscopic procession. This is why gyroscopes are used in navigational systems on earth and in space. They want to stay in position and by so doing, there is an initial frame of reference. As the speed of the gyroscope increases it gets more and more difficult, that is you need to apply more force to get the ball to spin faster. As a result you are putting stress on the muscles of the wrist and forearm...exerciser. It is a novel way to strengthen your arm and is just plain fun. I recommend you also purchase the NSD Power SM-02 Precision Multi-function Speedometer so you can measure how fast you can get the gyroscope to spin.

### ⭐ Customer service non-existent
*by N***N on May 3, 2017*

This spinner worked well for about a day, at which point I disassembled it to install the spin counter attachment. Once I got it apart I realized that the internal mechanism was slightly different than every other guide I could find online; it included a separate white plastic ring which no other model seems to have. Long story short, I can't seem to figure out how to get it put back together in a way that will actually engage the gyroscope. I looked online for a guide and could find nothing. I used their customer support form, which failed to work with an error about trying again several times. I called their customer support number, which rang until it reached a voicemail that hadn't been set up. I can not seem to make contact with NSD in any way to get my spinner working again. Poor form.

### ⭐⭐⭐⭐⭐ Exercise that feels... fun?
*by S***T on April 20, 2016*

Bought this to help exercise my wrist and forearm after an RSI scare. Not gonna lie. I spent a few hours figuring out how exactly to spin this, until enough videos made me realize that I had to spin it slower and not faster - I was spinning too fast to stay in sync. The key for me was the wrist motion (can't really explain it, but you should be rotating it horizontally and tilting it on the vertical axis) as well as trying to "feel" it sync. Once I got it working, I couldn't resist using it even when tired - there's just something about the flashing lights and the whirling and the resistance and the motion that just feels rewarding. I'm pretty sure the flashing lights are a way of gamifying it - which is a really good thing if it gets you do something that helps you. I bought the auto start model because I knew I would lose the rip-cord of the other models, and while I didn't get a counter, after a week with this I decided to get one to keep track of how well I'm doing with it. Did it cure my RSI? Too early to tell. Is it a great exercise? HECK YEAH

## Frequently Bought Together

- Auto-Start NSD Rainbow Lit Spinner Gyro Ball – Up to 15,000 RPM Premium hand strengthener and wrist exerciser for grip strength training, forearm workout, and pain relief; durable and portable
- NSD Power Essential Spinner Gyro Hand Grip Strengthener Wrist Forearm Exerciser

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-06-04*