- 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 dark environments. It can be recharged via USB, and can also be used with traditional AAA batteries (not included). - Easy to use: Large LCD screen displays all measured values on a single screen for quick reading. - Automatic storage and progress tracking: 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 this session. - Practical applications: Ideal for athletic training to monitor grip progression as part of strength or sport-specific routines; useful in rehabilitation to track hand recovery; suitable for older adults or office workers to monitor grip health and daily performance.