Accurate and Accurate Grip Thickness Measurement from 0 to 396 lbsMaximum measuring capacity: 180 kg / 180 kg, step: 0.2 lbs / 0.1 kg. The digital hand dynamometer is equipped with a high-precision strain gauge sensor that provides you with an accurate and instant digital reading of grip strength. Easy to Read & USB Charging: The newly upgraded bright screen function of the hand grip strength tester allows you to clearly see the measured values of the hand grip thickness tester in a dark environment. The displayed measurement values include user code, gender, grip strength value (lbs or kg), and grip condition. It can be charged with a USB cable, which is more environmentally friendly. You can also use traditional AAA batteries (not included). Easy to Use: Simply turn on the digital hand dynamometer and press the "Start" button to measure immediately, and press the hand dynamometer with the maximum isometric force for at least 5 seconds. After the test, the LCD screen automatically displays the maximum grip strength value, the grip strength status bar is displayed as "weak", "normal" or "strong", depending on the gender and age data of each user. Memory Record: This electronic hand grip strengthener tester can store up to 19 customizable data, and the records can be reviewed at any time if necessary; in addition, each test automatically displays the incremental increase or reduction of the last record for comparison. Occasions: The digital dynamometer is very suitable for sports training, sports, family and clinical use. Grip tests are necessary for sports like rock climbing. This is an ideal dynamometer for physical therapists, occupational therapists, athletic trainers, chiropractors, and general practitioners.