• Gyroscopic Design : The LED Wrist Ball features a gyroscopic design that provides a unique training experience, engaging your wrist and arm muscles for enhanced strength and dexterity. • Power Trainball : As a power trainball, it's not just a fitness tool but also a strength trainer, ideal for athletes and fitness enthusiasts looking to improve their performance. • Mainland China Origin : Originating from Mainland China, this wrist ball guarantees high-quality craftsmanship and durability, ensuring long-lasting use. • Versatile Sport Fitness Equipment : This wrist ball is a versatile sport fitness equipment, suitable for various settings, whether at home, gym, or during strength training sessions. • Easy to Use : Its user-friendly design makes it easy to use, making it an excellent addition to your workout routine. • Compact and Portable : Its compact and portable design allows you to carry it anywhere, making it possible to maintain your fitness regimen regardless of your location. Feature 1、Automatic start design, need to push the core in the direction of the arrow, start by the internal spring, very easy and convenient. 2、When it rotates, the cool colored lights inside will light up. It can kill time and add fun while restoring muscle soreness. 3、Without any strange vibrations, it can rotate for a long time without worrying about it stopping when moving. 4、The convenient design can be carried anywhere, whether in the office, gym or at home, it can be used as a toy to decompress at any time, and it can also exercise arm muscles. 5、Wrist ball can promote blood circulation and increase the strength of fingers, wrists, hands, forearms, biceps, triceps and ligaments and shoulders, and restore muscle strength. Product Description: Start: Automatic start Power: Generates a weight of up to 61 kg LED color: With 5-color light： 5 competitive colors Metal with LED：Metal shell + colored lights Function: Muscle relaxer Name: Wrist Ball Trainer LED Gyroscope Type: Sports Equipment Suitable for: multifunctional Gym, tennis, square, cycling and rock colling Products include Wrist ball * 1 Wrist rope * 1 How to use the wrist ball Step 1: Take the gyro ball in your hand, rotate the core upwards, and use two thumbs Rotate the rotor again and again until it reaches the corresponding elastic core position in the direction of the arrow. Step 2: Hold the wrist ball tightly, then immediately release your finger from the spinner, the spinner will Run at a speed of 1500 to 3000 rpm. At the same time, slowly lower your palm while rotating your wrist Get the power to maintain the existing gyro ball or higher than the starting speed. Step 3: As you gradually increase your core speed, you will feel the same synchronously increasing reaction force rotating gyroscope on your wrist and arm.