[High Precision] This hand grip tester is equipped with a high-precision strain gauge that can accurately measure grip strength up to 396 pounds, with a graduation of 0.2 pounds/0.1 kilograms. [Bright Screen and USB Charging] The newly upgraded bright screen function of the hand grip tester allows you to clearly see the readings on the hand grip tester in a dark environment. It can be charged with a USB cable, which is more environmentally friendly. You can also use traditional AAA batteries (not included in the delivery). [Easy to Use] The LCD screen of the hand grip tester clearly displays all measurements on the same screen. The displayed indicators include user code, age, gender, grip strength value in pounds or kilograms, and grip strength status. The display of the maximum grip strength value and weak, normal, or strong force can be saved and easily recalled for comparison. [Automatic Storage] The hand grip strength data of the hand grip tester can store up to 19 user-defined data, and its records can be viewed at any time when needed; after the test, the hand grip tester can show how much the grip strength has increased or decreased this time. [Multiple Occasions] The digital hand dynamometer is very suitable for sports training, sports, home, and clinical use. Grip strength testing is essential for sports such as climbing, wrestling, and gymnastics, and is an important indicator of overall health. Power supply: USB charging/2 AAA batteries (not included) Color: Black Material: Plastic Package contents: 1 * Electronic handle (battery not included) 1 * USB cable Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture to be a little different from the real thing. The measurement allowed error is +/- 1-3 cm.