High Accuracy: This grip strength tester features a high-precision strain gauge sensor that accurately measures grip strength up to 396 pounds, with a resolution of 0.2 lbs or 0.1 kg. Bright Screen Display & USB Charging: The upgraded bright screen allows clear reading visibility in low-light environments. It can be recharged via USB cable for eco-friendly use and also supports 2x AAA batteries (not included). Easy to Use: The large LCD screen clearly displays all measurement values simultaneously, including user code, age, grip strength in pounds or kilograms, and grip status. Maximum grip value and strength level (weak, normal, or strong) are saved and can be easily recalled for comparison. Automatic Storage: The hand dynamometer can store up to 19 user-defined data sets, which can be reviewed at any time. After testing, it displays the change in grip strength compared to previous results. Various Occasions: This digital hand dynamometer is ideal for sports training, fitness, home use, and clinical assessments. Grip strength testing is beneficial for activities like rock climbing and wrestling and serves as an indicator of overall health. Power Supply: USB charging or 2x AAA batteries (not included) Color: Black Material: Plastic Package Contents: 1 x Electronic Grip Tester (battery not included), 1 x USB cable Note: The package includes only the items listed above. Light and display differences may cause slight color variations between the image and the actual product. Measurement error allowance: +/- 1-3 cm.