1. Accuracy This grip strength tester is equipped with a precision strain sensor, capable of measuring grip strength up to 396 pounds with an accuracy of 0.2 pounds/0.1 kg. 2. Bright Display and USB Charging: The newly upgraded bright screen feature of the grip strength tester allows you to clearly view the measurements even in dark environments. It can be charged via a USB cable, and it also supports the use of conventional AAA batteries (not included). 3. Easy to Use The large LCD screen of the grip strength meter clearly displays all measurements on the same screen. The displayed data includes user code, A, Nder, grip value in pounds or kilograms, and grip status. The maximum grip value, as well as the weak, normal, or strong performance level, can be saved and retrieved for comparison. 4. Automatic Storage The hand dynamometer grip strength device can store up to 19 data entries, and their records can be viewed anytime when needed. After testing, the grip strength tester can display how much the grip strength has increased or decreased this time.