Welcome to our store！</br> 1、Through manual control, the rhythm and speed of ball core rotation can adjusted arbitrarily, the faster speed, the greater the force generated. 2、Life prevent carpal tunnel syndrome, exercise the muscle group of the arm, daily training all the time, relax outdoors at the same time. 3、Built-in automatic elastic equipment, can started easily without any trouble, the power can controlled to increase the entertainment and interest. 4、Long-term using will effectively exercise the arm muscle group, to help fitness enthusiasts arm targeted strength training. 5、Do not need the traditional pull rope, follow the arrowhead to the end, release easy to start, with the rotation of the wrist, feel the centrifugal force produced by the center of the ball, you can keep the wrist ball running. 6、Variable speed color light by your wrist ball with the speed of the ball core, the light will become colorful feeling dazzling rhythm, more fun. <div class="wang-edit-text"><div>Condition: 100% Brand New Item Type: Wrist Exerciser Ball Material: PC + Aluminium Alloy Optional Color: Lighting Green, Lighting White, Colorful Lighting Weight: Approx. 294.3g Size: Approx. 7.7x7.7x7.1cm/3.03x3.03x2.80inch</div><style> .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }</style></div> <div>1 x Self Starting Lighting Wrist Exerciser Ball</div><div>1 x Wrist Rope</div> Satisfaction - Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactoryaftersalesservice</br>