Digital brix refractometer with 0-55% range, 0.2% accuracy, and 0.1% resolution. An innovative alternative to traditional brix meters for measuring sugar content. Features automatic temperature compensation (10C to 40C) and a high light-transmission prism for improved accuracy and consistency. Easy to use: perform zero calibration for initial setup, then apply sample, close the cover, and press the start button to display the brix value on the screen. High-definition digital display with fast response. Equipped with a 600mAh built-in lithium battery. A full charge supports operation for at least one month. USB charging, energy efficient and eco-friendly. The sample well is waterproof and can be rinsed under running water after use. Keep the charging port dry and away from moisture. Ideal for winemakers, food and beverage producers, fruit growers, and sellers. Attention: 1. Test distilled water brix value before use (should read 0.0% 0.2%); if not, perform zero calibration. 2. Use sufficient sample volume: at least half the depth of the sample well. 3. Clean the measuring surface before each measurement and calibration. Color: Black Material: Plastic Package Contents: 1 x Digital brix refractometer Note: Light reflection and differences in display screens may cause slight color variations between the product image and the actual item. Measurement may vary by +/- 1-3cm due to manual measurement.