1. Use high-quality plastic materials and simple design 2. The scale is clear, the measurement is accurate, and the error range is small 3. It comes with a floating rope, which can float freely on the pool water, or can be fixed in the corner of the pool. When using it, the effective part of the thermometer must be placed in the water. 4. Waterproof sensor probe, more accurate measurement 5. Using sunlight as energy source, LCD screen, put into the water to automatically sense the temperature of the water, energy saving and environmental protection 6. When there is no sunlight, a built-in button battery can provide power 7. Measuring range: 0-50 degrees Celsius, 32-122 degrees Fahrenheit 8. Accuracy: +/-0.5 degrees Celsius 9. Dimensions: diameter 80 x length 140 mm 10. Scope of use: swimming pools, hot spring pools, baths, etc.