High Sensitivity - Equipped with high precision measurement sensor, automatically sense and display maximum grip force. Capacity Range: 90 kg / 200 lbs. Adjustable Handle - Designed to fit large and small hands. Adjust the knob according to your hand size, which makes you test in a comfortable way and measures the maximum force. Set different ranges for different people - Easy set up with 19 individual users - Can install Number, gender, age - and save and recall test results for each user. Can create a lot of interest among friends, family and colleagues who want to fight to show their strength. The result is displayed intuitively - Each trial is rated "Weak", "Normal" or "Strong" in based on the age and gender data entered for each user. You can improve your strength according to the result. Portable and suitable for training anywhere - Suitable for people who do rock climbing, golf, tennis and people who participate in hand muscle rehabilitation training . Moreover, you can train and relax in the office.