This product is a complete equipment for hand strengthening exercises for all fitness levels, from beginner to advanced, at home and in the gym. Characteristics: It helps to improve the strength, power and speed of the fingers, wrists and forearms. It can relieve anxiety while increasing blood flow to the hand, finger, and arm. A fun hand strength exercise for those who have arthritis, inflammation of the tendons, carpal tunnel and those recovering from tendon surgery. Smart counting display, the quantity you made will be shown on the display. Adjustable resistance, you can adjust it according to your needs. The ergonomic shape fits all hand sizes, for men and women. Portable and lightweight, convenient to carry. This can be done at home or in the office in just 5 minutes a day. Suitable for athletes, musicians, climbers, tennis players, etc. Technical data: Material: PP plastics spring steel Black colour Resistance range: 5 60kg / 11.02 132.28lb Product size: 160 * 110 * 22mm / 6.3 * 4.33 * 0.87in Package weight: 170g / 6oz Note: 1. Due to the different display screen and light effect, the actual color of the item may be slightly different from the color shown in the pictures. 2. Package List: 1 * hand gripper;