Deyard EH101 Electronic Hand Dynamometer 90 kg / 200 lbs Capacity Range Hand Grip Strengthener with 19 Sets of Individual Records Capacity Range: 90 kg / 200 lbs. Built-in high precision strain gauge sensor. Division: 0.2 lbs / 100 grams. Easy set up with 19 individual users - No., gender, age - and save and recall test results for each user. Auto captures and displays maximum grip force. Compares individual test run for each of the 19 users. Auto / manual shut off, Low battery / overload indication. 2 AAA batteries are required. Each test run is rated "weak", "normal" or "strong" based on age and gender data entered for each user. Materials: plastic, steel, and tempered glass Dimensions: Length: 19.6cm Width: 13.1cm Height: 3.6cm Unit: kg/lb Maximum Range: 90kg / 200lb Power supply: 2x 1.5v AAA batteries Using environment: Temperature: 0-35 C Push Start button and do a quick measurement without personal information and the record can&#039;t be stored. Push and hold ON/SET button 3 seconds or keep idle 20 seconds to turn off the dynamometer. 1x Electronic Dynamometer EH101 Push the &#034;up and down&#034; button to find out the users&#039; information including No., gender and recent records.