Theory : Hygrometer : Mainland China • Smiling Face Display :The smiling face display adds a fun and friendly touch to your temperature and humidity readings. • Mini Size:The compact size of this thermometer makes it easy to carry around and use in any room. • Accurate Readings :Get precise temperature and humidity readings with this electronic thermometer, ensuring that you can maintain a comfortable environment. • Refrigerator Thermometer:This thermometer is perfect for use in refrigerators, helping you keep your food at the right temperature.Descriptions: Function: This thermometer provides you accurate humidity and temperature readings for indoor . Air omfort indicator: Level icons indicate air comfort, great for monitoring family's living conditions and health. Clear reading: Large screen features large numbers, allowing easy readability. Conveient design: You can attach to refrigerator or place the table with the hanging hole and back stand. Application: Suitable for office, bedroom, living room, bathroom, school and more. Good quality: Made from good quality ABS plastic, which is sturdy and durable, stylish design perfectly matches with your room. Size: 4.5*4.5*1.5cm Color: white Material: ABS Temperature measuring range: -50~70℃ Temperature resolution: 0.1℃ Accuracy: ±1℃ Battery: AG13 on cell Package list: 1 x thermometer hygrometer(Batteries not included)