DescriptionThis portable light tension guitar hand exerciser is designed with small and exquisite appearance, easy and convenient to operate, it can increase your finger speed, strength and independence, suitable for the auxiliary exercise of instrument playing, physical exercise and other activities.Features- Color: Black. - Size: Approx. 8.5 * 7.1 * 2.1cm - Small, light weight and convenient to operate - Use the hand exerciser to warm up before playing and to strengthen and stretch the fingers. - Unique ergonomic design allows you to exercise fingers, wrists and forearms while practicing the correct action for playing musical instruments. - Practice without your instrument anywhere anytime, increase finger speed, strength and independence. - Designed for all instrumentalists, from beginners to professionals. - Suitable for the auxiliary exercise of instrument playing, physical exercise and other activities.