This water temperature meter is designed for allowing you to easily control the temperature and give your families(babies, elderly people, etc.) a comfortable bath environment, avoidingbeing exposed to too hot or too cold water.Features:Built-in electricity generator, self generating power-supply, makes it need no batteries to work.High-precision temperature sensor, accurately measures the temperature of water ranging from 5C-85C with 0.5C error.It is easy to install and remove, with no tools required; 1/2 inch nut is compatible with most of the shower equipment.LED display, 360 degrees rotatable, easy to observe, shows the indicator light (blue/ green/ red) to help choose suitable water temperature.Digital shower thermometer, eliminates worry of the water being too hot or too cold before stepping into the water.Specifications:Material: ABS + PCColor: Silver & BlackScrew Nut: 1/2inTemperature Display: C/ Temperature Range: 5~85C (41~185)Measurement Accuracy: 0.5CIndicator Light: Blue ( 38 or 100); Green (38-42 or 80-108); Red (42 or 108)Timing Range: 99 hours and 59 minutesItem size: 81*81*30mm / 3.2*3.2*1.2inItem weight: 75g / 2.64ozPackage Size: 120*105*35mm/4.7*4.1*1.4inPackage Weight: 120g/4.2ozNote:Thermometer set only, other accessories in the pictures are not included.Due to manual measurement, there may be deviation, please in kind prevail.Due to lighting or other reasons, the picture and material object may slightly differ.Packing List:1 * Shower Water Temperature Meter1 * Waterproof Gasket1 * User Manual