DR402 Digital Beer Refractometer Wort Hydrometer Brix 0-50% Concentration Meter Refractometer Electronic Wine Alcohol Tester, DR402feature The device is standardized and accurate and easy to read. Digital displays are fast and easy to read. Product specifications 1. Apply sugar Brix Specific gravity 3. Measurement range: Brix: 0. 0~50. 0% Specific gravity: 1 1. 130 4. Accuracy Brix: 0. 001 Specific gravity: 0. 001 Package included 1X digital refractometer 1X clean cloth 1X manual 1x box Specification: Package Weight One Package Weight 0. 34kgs 0. 75lb One Package Size 17cm * 10.