Constant 200 Lbs / 90 Kgs Digital Hand Dynamometer Grip Strength Measurement Meter Auto Capturing Hand Grip Power Equipped with high precision strain gauge sensor; Provides gripping power up to 198lbs / 90kgs, Division: 0.2 lbs / 100 gs, Unit: lb / kg 19 definable users with options for gender and age to store, along with the ability to save and recall test results for each user Compares individual test run for each of the 19 users, and displays the incremental increase, or decrease from the last record Each test run is rated "weak", "normal", or "strong" based on age and gender data entered for each user Auto / manual shut off, Low battery / overload indication; Runs on 2pcs AAA batteries (NOT included for safety shipment)