The silicone grip section is very nice as it helps with the gyro ball not coming loose from your hand. There is a place to attach a lanyard of sorts, if you are really concerned about the gyro ball flying away.

This certainly requires some fine motor skills in order to use. That it will help refine your fine motor skills in that non-dominant hand/arm.

The LEDs increase in intensity the faster that you get the revolutions going. At least gives you a general indication to how fast you have the gyro spinning. The green LEDs getting brighter.

The cords that come with it have a plastic sheath over the ends that help it stay in the starting holes of the gyro's rotor.

It comes with a string included to help start the spinning action. if the gyro is to the right so should your hand, follow it and slowly speed it up.

It lights up when spinning and there's a digital counter. The ball is plastic with a rubber grip on it, it's very easy to hold and you not worried that it will slip.

Simple to start with a pull-string (2 strings are included). Impact Resistant structure with Military-grade plastic shell.

This exercise ball lights up when it's spinning! And the LED light is not powered by batteries. It will keep lighting up as long as it's spinning!

Usage:

1. To start, hold the ball in your hand with the exposed gyroscope facing left, insert the included red string into the hole, wind it up, and pull straight down, fast enough to have the gyroscope turn the LED on.

2. Then turn your hand facing down, and slowly start to rotate. The gyroscope will start to "bite" and you will feel like it is scratching against the inside of the wrist ball.

3. To keep rotating your wrist and the gyroscope will spin faster and develop a higher pitch sound. Once you have it spinning fast enough, you can stop your hand and feel it oscillating right in your palm.

• Novelty design with LED lights, which is fun to see how fast you can get it spinning.Not only have sound, but visual cues, as to how fast the ball is turning.The cool humming sound getting louder as this spins up,computer balanced inner gyroscopic rotor for VIBRATION FREE operation at up to 15,000 RPM.
• Performance Digital LCD counter displays various vital workout information, including historical top speed; Cool LED lights inside will light up while spinning, no battery needed.
• This exerciser is a great way of strengthening your grip and exercising your wrist and forearms.This Gyro Ball is definitely a great workout compares to using regular grip strengtheners.This makes it easy to hand to a friend, and see if they can beat your speed.
• Exercise has never been more fun. This competition exercise gyro ball comes with a Battery-free and LCD counter that gives you vital information on your Spinner exercise routine. Know the current total revolutions, Speed in RPM, or have some fun and see what's the maximum RPM you can achieve on your Spinner. All Resbo sport wrist balls are tested to be vibration free at up to 15,000 RPM.
• This gives you an amazing wrist and forearm workout wherever at home, office, or the park.Recommend this to all people who suffer from arthritis, carpel tunnel, joint aches, or weakness in the arm/hand.It is being used for carpal tunnel syndrome, by musicians, for improving performance in sports, as well as, helping in repetitive stress for computer terminal operators.

Novelty design with LED lights, which is fun to see how fast you can get it spinning.Not only have sound, but visual cues, as to how fast the ball is turning.The cool humming sound getting louder as this spins up,computer balanced inner gyroscopic rotor for VIBRATION FREE operation at up to 15,000 RPM.Letigo