Super practical shower thermometer: With this water thermometer, shower with just the right water temperature, which is especially suitable for families with babies. High-precision monitor: The shower temperature gauge has a built-in high-precision temperature sensor, which provides a measurement range of 5-85°C and an accuracy of ±0.5°C. Celsius/Fahrenheit display is optional. No need for batteries: The built-in small hydroelectric power new system generates current without the need for batteries or the risk of leakage. It automatically shut down when there is no water flow. Easy to install: 1/2 inch nut, compatible with most shower equipment, easy to install without any tools.360°rotating LED temperature display: The clear LED screen allows you to monitor the shower temperature in real time. 360° can be rotated for better viewing effect. Three-color indicator light: The screen displays indicator lights (blue/green/red) at the same time to help you choose the right water temperature. Memory function: Built-in memory chip to record bathing time (up to 99 hours and 59 minutes). Colour:As Shown Material:Metal Package Contents: 2 * bath water thermometer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.