A. 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. B. The bright screen function of the grip strength tester 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. C. The LCD screen of the grip strength meter clearly displays all measured values on the same screen. The displayed measurement values include user code, age, gender, grip value in pounds or kilograms, and grip status. The maximum grip value display and the weak, normal or strong power level can be saved and easily recalled for comparison. D. The hand dynamometer grip strength device can store up to 19 user-definable data, and their records can be viewed at any time when needed; After the test, the grip strength tester can display how much grip strength has been increased or decreased this time. E. Digital hand dynamometer is suitable for sports training, sports, family and clinical use. Grip testing is necessary for sports such as rock climbing, wrestling and gymnastics, and it is also an important indicator of overall health. F. Power supply mode: USB charging/2xAAA battery (not included) G. Colour: black H. Material: plastic I. Package Contents: 1 * Electronic Grip (Not included battery), 1 * USB cable. Only the above package content, other products are not included. J. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.