Compact and Ultra-light design, carry it in your pocket or bag that you can practice without your instrument anywhere anytime. Quickly and Safely to improve your strength, endurance, flexibility and coordination. Curvaceous design with ergonomically for user friendly, more comfortable while practicing. A soft rubber at the top and bottom, not only non-slip and sweat-resistant, also durable and long-lasting. Not only design for musical instrument, but for practicing the hand fingers strength, like Computer Operate, Climbing, Yoga, Gaming, Bowling, Fishing, Martial Arts and etc. The hand and finger grip exerciser is not design for musical instrument, but for practicing the hand and isolated fingers, make them more strengthen, flexible and coordinative. Every physical exercise start from lower resistance and slow practice. Hold the exerciser in hand and place your finger-tip on the top of the buttons independently. Push the button down, keep the gesture for 3-5 second, then relax, repeat this practice for 5-10 times. Slowly increase to 3 group of 10 times practice (totally 30times) step by step. While you feel painful or tired, please stop the practice immediately. Just as other physical exercise, practice too much or not proper use of the apparatus would cause muscle pain or injury. So the speed of the practice should be slow, and increasing frequency and resistance cautiously. Package Included: 1 x Hand Exerciser