The digital wine refractometer model ACM-DRB-01 is a precise and portable instrument used to measure sugar content in unfermented grape juice, employing advanced optical and digital technologies. It offers various scales including °Oechsle, Brix, and Baum for accurate readings and features easy operation, temperature compensation, and low power consumption. The refractometer's design includes a waterproof circuit, strong shock absorption, and an LCD display, making it user-friendly and reliable for wine-making applications.