Just firmly press the knob to automatically count. Press and turn the knob to clear dozens of digits. Easily adjustable resistance from 10-130lbs as needed. The hand gripper is suitable for everyone, such as athletes, athletes, fitness trainers, fitness, musicians and people who want to exercise their hand, wrist and fingers. Perfect for improving strength and flexibility of the forearm, wrists, fingers, hand and toning. Excellent for recovery from hand injuries, rheumatoid arthritis, arthritis, carpal tunnel, fractures, broken wrists and tendon surgeries. Relieve hand fatigue People who use a mouse and keyboard for a long time may experience pain and stiffness in their joints. The gripper can promote blood circulation in the hands and relieve osteoarthritis. Hand Rehabilitation Training Not only can the grip device increase strength, but it can also be used for rehabilitation training after injuries, promoting blood circulation and helping to restore hand strength. Relieve stress If you feel anxious and can't concentrate. The hand grip strength trainer can help you relieve daily stress and release emotions. Exercise pressure No matter you are an athlete, musician, office worker or grip exerciser, you can use it to strengthen your hand anytime, anywhere. Exercise finger strength Hand Grip Strengthener that strengthens each finger individually. If you need to use fingers that are not used frequently in daily life, you can use them to strengthen your fingers. Relieve hand fatigue The hand exerciser can relieve pain caused by staying in the same posture for a long time and increase blood circulation.