Accurately and precisely measure grip force from 0 to 264 lbs (120 kg): This handheld power meter is equipped with a high-precision strain gauge sensor to provide you with accurate and instant digital readings of grip force. Measuring range: 0 to 264 lbs (120 kg) grip force. LCD display and bright screen display: On the large LCD display, all measurements are clearly displayed on the same screen. The displayed readings include user code, age, gender, grip force value in pounds or kilograms, and grip strength status. What's more, the new improved bright screen function of the grip strength tester allows you to clearly see the grip strength tester readings in a dark environment. USB charging + battery power supply: Two power supply methods. It can be charged with a USB cable, which is more environmentally friendly, or it can be charged with standard AAA batteries (not included). Storage records: The digital handheld power meter device can store up to 19 user-defined data and retrieve its records at any time when needed. In addition, each test automatically displays the last recorded incremental increase or decrease for comparison. Scope of application: The digital handheld dynamometer is very suitable for sports training, sports, home and clinical use. Sports such as rock and roll require grip strength testing.