High Sensibility - Features a high-precision measurement sensor that automatically senses and displays maximum grip force. Capacity Range: 90 kg / 200 lbs. Adjustable Handle - Designed to accommodate various hand sizes. Adjust the knob according to your hand size for comfortable testing and accurate measurement of maximum grip strength. Customizable settings for multiple users - Supports setup for up to 19 individual users. Input user details such as number, g , and age to save and recall test results for each person. Ideal for engaging friends, family, and colleagues in friendly strength comparisons. Results displayed clearly - Each test result is categorized as "Low", "Normal", or "Strong" based on the user's age and g . Use the feedback to monitor and improve grip strength over time. Portable design for use anywhere - Suitable for individuals involved in rock climbing, golf, tennis, or hand muscle rehabilitation training. Can also be used for exercise and relaxation in the office.