Product name: grip strength tester Product size: 19.5*12.5*3cm/7.67*4.92*1.18inch Product color: As shown in the figure Product material: pp product features: 1. Designed for home, sports and clinical use, automatic/manual closing can save the display of maximum grip value and weak, normal or strong power levels, and can easily recall for comparison. 2. Accurate measurement, using high-precision strain sensor 3. LCD digital display high-definition LCD display, accurate and clear reading, no matter day or night, the number is clear and visible 4. The buttons are clear and can be used by men, women and children, with small size, large effect and wide application range. 5. When the automatic storage belt counting function is powered on and reset to zero, press and hold for 3 to 5 seconds, the counting will be displayed, and the counting function will start with flashing. To exit, press and hold this 3 for 5 seconds. Precautions: 1. As we all know , the different computers display colors differently, the color of the actual item may vary slightly from the following images. 2. If you feel difficult to choose the size, you can feel free to contact mewe will give you some suggestion, but it is for you reference only. Shipment includes: 1 pc grip strength tester