Precision - 120 kg: The hand dynamometer is equipped with high-precision strain measurement sensors that provide you with accurate and instant digital readings of grip strength. Clear screen display / USB charging: With the hand dynamometer function, you can see the measured values in a dark environment. It can be charged with a USB cable, which is more environmentally friendly. It is also possible to use traditional AAA batteries (not included). 19 Continuous Data Recording: The grip strength tester is suitable for different successive users, and you can record the gender, age and test results of each user. Hand digital power meter on the LED screen, all measured values are clear and easy to read. Easy to use: Press the hand dynamometer to measure immediately and press for at least 5 seconds with maximum force. After the test, the LCD screen automatically displays the grip force value. Package Content: Hand-held digital dynamometer.