Product size about :19.5*12.5cm/7.6*4.9in Product color: As shown in the figure Test range: 0-120kg Product material:abs product features: Versatile power supply: supports charging and using AA batteries, convenient for replenishing power at any time without worrying about power outages. Wide test range: The measurement range covers 0-120kg, suitable for users of different ages and hand strength levels. Intelligent adjustment design: Easily adjust the test strength to meet the needs of high school entrance examination preparation and daily exercise, easy to operate. Designed for the high school entrance examination: Accurately measure grip strength to provide a scientific basis for students to improve hand strength and test performance. Easy to carry and use: Lightweight and portable, suitable for use in school, home or sports venues, grip training at any time. Precautions: 1. As we 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 contact us at any time. We will give you some suggestions, but for your reference only. Shipment includes: 1 pc Electronic Grip Dynamometer Tester