Feature: 1. SUGAR AND TEMPERATURE TESTING: Accurately test sugar content 0 to 60% and temperature simultaneously. Monitoring brewing process easily to avoid failure. Become a faithful assistant to your brewing. Test the sugar content now. 2. EASY TO USE AND CALIBRATE: Get accurate measurements in 5 seconds with just a few drops of sample. No complex calibration steps or expensive solutions needed. Simply add a few drops of distilled water and press the 'ZERO button' to calibrate. 3. MULTI FUNCTIONAL: The digital refractometer can be connected to your smartphone for easy viewing of results. Through a mobile app, it effortlessly stores up to 1,000 data readings and allows you to retrieve previous measurements, add notes and images, and share data with friends or family. 4. LIGHT AND TEMPERATURE COMPENSATION DESIGN: Measure sugar content outdoors easily. Automatic temperature compensation (10 to 40℃) prevents temperature impact on results. Pocket sized design for portability, large backlit screen for easy reading, and easy Fahrenheit Celsius conversion. 5. WIDE APPLICATION: Used to measure the sugar content of fruits, maple syrup, vegetables, coffee, beverages, jams, etc., and is useful in laboratories, sugar refineries, breweries and other industries. Easily obtain various sugar values in daily life. Specification: Item Type: Refractometer Testing Range: Sugar 0-60%, Salt 0-24% Temperature Compensation: 10-40.0℃ Size: Approx. 126x51x35mm/4.96x2x1.37in Bright Display: nnn Out of Range Display: hhh No Sample Display: LLL Battery: 3 batteries (not included), low battery warning Auto Shut Off: 3 minutes of inactivity Weight: Approx. 242.00g / 8.54oz. Package List: 1 x Refractometer 1 x User Manual 1 x Storage Pouch Note: Do not immerse the instrument in water, and try to avoid water entering the battery compartment