LED-polskrachttrainerbal, zelfstartende gyroscopische pols- en handbal, arm- en handspierkrachttraining, fitnessapparaat.

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、Without any strange vibrations, it can rotate for a long time without worrying about it stopping when moving. 3、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. 4、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 Size:7*7*5.5cm Function: Muscle relaxer Name: Wrist Ball Trainer 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 thumbsRotate 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.