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 setup 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" based on the age and gender data entered for each user. You can improve your strength depending on 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.