[High Accuracy] This grip strength tester is equipped with a high-precision strain gauge sensor, which can accurately measure grip strength up to 396 pounds, with a division of 0.2 lbs / 0.1 kg. [Screen Display & USB Charging] The newly upgraded screen function allows you to clearly see the readings in a dark environment. It can be recharged with a USB cable, which is more environmentally friendly. Traditional AAA batteries (not included) can also be used. [Easy To Use] The LCD screen clearly displays all measured values on the same screen. The displayed measurement values include user code, age, g , grip value in pounds or kilograms, and grip status. The maximum grip value display and the weak, normal, or strong level can be saved and easily recalled for comparison. [Automatic Storage] The hand dynamometer can store up to 19 user-definable data sets, and their records can be viewed at any time when needed. After the test, the device can display how much grip strength has been increased or decreased during this measurement. [Various Occasions] This digital hand dynamometer is suitable for sports training, fitness, family, and clinical use. Grip testing is beneficial for sports such as rock climbing, wrestling, and gymnastics, and it is also an indicator of overall hand strength. Power Supply: USB charging or 2x AAA battery (not included) Color: Black Material: Plastic Package Contents: 1 x Electronic Grip Tester (battery not included) 1 x USB cable Note: Light and different displays may cause the color of the item in the picture to vary slightly from the real thing. The measurement allowed error is +/- 1-3 cm.