Adjustable - The adjustable resistance is designed from 5 to 60 kg, which can increase or decrease the hand tension according to your needs and effectively exercise the flexibility of the hands, wrists and forearms. Accountable - The gripper hand grip counts automatically, and the lower part of the trainer is equipped with a mechanical counter, which can clearly record the number of times by strengthening the hand and organize your exercise plan reasonably. Quality design - The clamp has a comfortable non-slip rubber grip, high quality spring steel is chosen during production, which is high temperature resistant, rigid and long service life, so the clamp itself is more durable and safe without damaging your hands and fingers. Portable and compact - The hand exerciser is about 10*15cm, which can be easily stored in your pocket or backpack, allowing you to train anytime, anywhere. Suitable for home, gym, office or walking, watching TV, outdoors and traveling. Wide Application - Improves finger strength and flexibility for guitarists, rock climbers, pianists, tennis, boxing, golf and fitness. It can reduce joint stiffness, release daily stress, and effectively exercise grip strength, wrist strength, forearm and more. Perfect for athletes, musicians, rock climbers, golfers and tennis players, homes, offices, outdoor activities and travel.