1. This grip force meter is equipped with a strain gauge, which can measure grip force up to 396 pounds, divided by 0.2 pounds / 0.1 kg. 2. The grip force meter features a bright display function, allowing visibility of readings in dark environments. It can be charged via a USB cable and is also compatible with regular AAA batteries (not included). 3. The LCD display of the grip force meter shows all measured values on the same screen. The displayed measurements include user code, age, gender, compression value in pounds or kilograms, and compression status. The maximum grip value and the display of weak, normal or strong force can be saved and recalled for comparison. 4. The hand dynamometer can save up to 19 editable grip force data records, which can be viewed at any time if necessary. After the test, the hand grip force meter can show the increase or decrease in grip force compared to previous records. 5. The digital hand dynamometer is suitable for sports training, sports activities, family use, and clinical settings. The compression test is essential for sports such as climbing, wrestling, and gymnastics, and is also an indicator of overall health. 6. Power supply: USB charging / 2xAAA battery (not included) 7. Color: Black 8. Material: Plastic 9. Package Contents: 1 * Electronic Handle (battery not included), 1 * USB Cable. Only the above package contents are included; other products are not included. 10. Note: Due to light and screen differences, the color of the item may vary slightly from the picture. The measurement error allowed is +/- 1-3 cm.