High-precision hand grip strength tester with a strain gauge sensor that measures grip strength up to 396 lb (180 kg) with 0.2 lb / 0.1 kg graduations. Bright LCD display and USB charging: the upgraded bright screen allows easy reading in dark environments. It can be charged via a USB cable, and traditional AAA batteries (not included) can also be used as a backup. Easy to use: the large LCD shows all measurements on one screen. Displayed data includes user code, age, gender, grip value (lb or kg), and grip status. The device can save and recall the maximum grip value and the weak/normal/strong power level for quick comparison. Automatic data storage: stores up to 19 customizable data records, which can be viewed anytime. After a test, the device can indicate how much the grip strength has increased or decreased. Key use scenarios: - Clinical rehab and physical therapy: monitor patient progress after hand injuries and adjust exercises accordingly. - Sports training: track grip development for athletes such as climbers and weightlifters to tailor training. - Home fitness: individual users can quantify progress, set goals, and compare results over time.