Here's the information provided: Salinity Range: 0.1 to 20.0% Salinity Resolution: 0.1% Salinity Accuracy: 1% Calibration: 3.5% standard calibration liquid Temperature Compensation: Yes Operation Environment: 0 to 80.0 Celsius (32.0-176 Fahrenheit); Less than 90% Temperature Range: 0.1-80.0 Celsius (32.0-176 Fahrenheit) Temperature Accuracy: 0.5 Celsius/Fahrenheit Temperature Resolution: 0.1 Celsius/Fahrenheit Auto Shut Off: 5 minutes Power: 3x1.5 LR44 battery cell (not included) Display: LCD; supports backlight Battery Indicator: Low battery indicator Waterproof Level: IP67 dust-proof; waterproof This multifunctional water quality test meter integrates salinity in percentage, temperature in Celsius/Fahrenheit, and supports the backlight. It's designed for measuring salt concentration and temperature of liquids. The product is ergonomically designed with IP67 dust-proof and waterproof grade, making it portable, anti-skid, and resistant to falls. It offers fast measurement, high stability, and good consistency. It finds applications in family kitchens, hotel catering, food processing, and other fields. Color: Blue Material: Plastic Package Contents: 1 * Salinity Meter Please note that light and different displays may cause the color of the item to vary slightly from the real thing, and the measurement allowed error is +/- 1-3cm.