1、Easy Calibration: The refractometer is easy to use and calibrate, just 1 drop of sample, can easily test Brix, can measure in three seconds. 2、High Accuracy: Digital refractometer is a precise instrument with high measurement accuracy and quick access to accurate readings. 3、Widely Applicable: Sugar meter is suitable for the sugar content of pears, watermelons, grapes, cantaloupe, citrus and other fruits. 4、Lightweight And Portable: Hand held sugar refractometer, compact structure, easy to measure, light and delicate, easy to carry. 5、Professional: Brix refractometer is designed for testing sugar content and specific gravity, ideal for home winemaking, farming, gardening and more. 1 x Storage Box1 x Dropper1 x Screwdriver1 x Refractometer (Battery Not Included)1 x Chinese and English Manual Item Type: RefractometerMaterial: ABSBattery Parameters: 1 x AAA Battery (Not Included)Temperature Measurement Range: 0-40℃Refractive Index: 1.3330- 1.5177Weight: Approx. 307g/ 10.8ozMeasuring Range: Pear, Watermelon, Grape, Cantaloupe, Citrus and Other Fruits