Counting - Built-in mechanical meter at the bottom of the hand handle, it will record your workout number automatically, and the counter can be re-set for reuse. Strength Training - Improve the strength of your hands, fingers, wrist and forearms, and strengthen hand strength and skills Injury Recovery - Helps people with arthritis, tendonitis, and carpal tunnel to restore and strengthen their grip. It is highly effective to relieve pressure on the finger muscles caused by writing for a long time. ADJUSTABLE RESISTANCE - The resistance of the hand handle can be easily adjusted from 11 lbs to 132 lbs (5-60 kg), and is ideal for men and women with different grip strength. EASY TO CARRY & CONVENIENT - Compact design, easy to fit in your pocket or backpack. Suitable for training your hand power anywhere and anytime, such as home, office, gym, watching TV, reading or walking in the park.