High accuracy - This grip strength tester uses a high-precision strain gauge sensor to measure grip strength up to 396 pounds with a resolution of 0.2 lb / 0.1 kg. Bright screen display and USB charging - The upgraded bright screen provides clear readings in low light. It can be recharged via USB, and traditional AAA batteries (not included) can also be used. Easy to use - Large LCD screen shows all measured values on one screen: user code, age, gender, grip value in pounds or kilograms, and grip status. - The maximum grip value and the power level (weak, normal, strong) can be saved and recalled for easy comparison. Automatic storage - Stores up to 19 user-definable data records; records can be viewed anytime. - After each test, it shows how much grip strength has increased or decreased. Use scenarios - Athletic training and performance testing to track grip strength over time. - Physical therapy and rehabilitation to monitor progress and guide therapy. - Routine strength monitoring for seniors or general fitness to maintain hand health and function.