Features: ✅Ultra-Practical Water Bath Shower Thermometer: with this thermometer, we can take shower with just right water temperature, especially suitable for the family with babies. Built-in memory chip, keeping track of bathing time (up to 99 hours and 59 minutes). ✅High Precision Monitor: Built-in high precision temperature sensor, providing 0~100°C measurement range and ±0.5°C accuracy. Celsius/ Fahrenheit display selectable. The screen also displays the indicator light (3-Color Indicator Light-blue/ green/ red) to help you choose the suitable water temperature. ✅Easy Installation: 1/2 inch nut, compatible with most of the shower equipment, easy to install without any tool needed. ✅360° Rotating LED Temperature Display: Clear LED screen enables you to monitor the shower temperature in real time. 360° rotatable for better viewing. ✅No Battery Needed: Built-in small-scale hydro power system to generate current, no battery needed or power leakage risk. It will automatically turn off after no water flow. Note: For thermometer protection, please install the gasket by hand instead of by tool. Specifications: Material: ABS (Electroplating) + PC Screw Nut Size: 1/2in Temperature Display: °C/ ℉ Temperature Range: 0~100°C (32~212℉) Measurement Error: ±0.5°C (±1℉) Measurement Accuracy: 0.5°C (1℉) Indicator Light: Blue (＜ 38℃ or ＜100℉); Green (38-42℃ or 80-108℉); Red (＞42℃ or ＞108℉) Timing Range: ≤99 hours and 59 minutes Item Size: 100 * 85 * 30mm / 3.9 * 3.3 * 1.2in Item Weight: 85g / 3.0oz Package Size: 12 * 10.5 * 3.5cm / 4.7 * 4.1 * 1.4in Package Weight: 120g / 4.2oz Package List: 1 * Water Bath Shower Thermometer 1 * Waterproof Gasket 1 * User Manual (English)