[High Accuracy] This grip strength tester is equipped with 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 & USB Charging] The newly upgraded bright screen allows clear reading visibility in low-light environments. It can be recharged via USB cable for eco-friendly convenience. AAA batteries (not included) are also compatible. [Easy To Use] The LCD screen clearly displays all measured values simultaneously, including code, age, gender, grip value in pounds or kilograms, and grip status. The maximum grip value and power level indicators (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 results. [Various Occasions] This digital hand dynamometer is suitable for sports training, fitness, home use, and clinical applications. Grip strength testing is beneficial for activities such as rock climbing, wrestling, and gymnastics, and serves as an important 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: Light and screen display differences may cause slight color variations. Measurement allowance is +/- 1-3 cm.