1. E-ink screen home hygrometer, data can be clearly read in various brightness and angle. 2. Smart BT Connect to for MIJIA APP, intelligent to control househeld appliance which can work with for mijia app 3. High sensitivity and accurate sensirion from Switzerland, sense subtle change of temperature and humidity a breath away. 4. 3 locating methods, melt in every scenes as long as you need it. 5. An expression to spell over comfort level, cute and simple. Low consumption E-ink screen, a CR2032 button battery for one-year. Changeable degree centigrade and Fahrenheit degree display. Recommendation: E-lnk digital temperature & humidity meter provides an intuitive visual information that lets you know the exact temperature and humidity timely. With more and more information interact in our smart phone, recording daily temperature & humidity automatically maybe also can help you moniter the living environment, and make decision on turn on the air conditioner or open the window ventilated. Make our life easier and smart. Colour:As Shown Material:plastic+metal Package Contents: 1 x MHO-C401 Smart BT Thermometer Hygrometer