[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 precision of 0.2 lbs / 0.1 kg. [Bright Screen Display & USB Charging] The upgraded bright 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. 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 code, age, g , 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 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 this time. [Various Occasions] Digital hand dynamometer is suitable for sports, family and clinical use. Grip testing is beneficial for activities such as rock climbing, wrestling and gymnastics, and it is also an indicator of overall health. Power supply mode: USB charging / 2xAAA battery (not included) Colour: black Material: plastic Package Contents: 1 x Electronic Grip Strength Tester (battery not included) 1 x 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 slightly different from the real thing. The measurement allowed error is +/- 1-3cm.