Original Xiaomi Mijia Smart Bluetooth Digital Thermometer Hygrometer 3(White)1. Home hygrometer, data can be clearly read in various brightness and angle. 2. High sensitivity and accurate sensirion from Switzerland, sense subtle change of temperature and humidity a breath away. 3. Expression to spell over comfort level, cute and simple. 4. Low consumption screen, a CR2450 button battery for one year. 5. Built in advanced Sensirion temperature and humidity sensor, temperature accuracy: 0. 1 degrees, humidity accuracy: 0. 1