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 / 0.1 kg. Bright Screen Display and 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. Optionally powered by 2xAAA batteries (not included). Easy to Use: The LCD screen clearly displays all measurement values simultaneously, including user code, age, g , grip strength in pounds or kilograms, and grip status. Maximum grip value and strength level (weak, normal, or strong) can be saved and 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, the device displays changes in grip strength compared to previous measurements. Various Applications: This digital hand dynamometer is ideal for sports training, fitness, home use, and clinical assessments. Grip strength testing is beneficial for activities such as rock climbing, wrestling, and gymnastics, and serves as an indicator of overall health. Power Supply: USB charging or 2xAAA battery (not included) Color: Black Material: Plastic Package Contents: 1 x Electronic Grip Tester (battery not included) 1 x USB Cable Note: Light and screen display differences may cause slight color variations between the image and the actual item. Measurement error allowance: +/- 1-3 cm.