Features: Temperature/ Humidity Values: This digital hygrometer thermometer shows indoor temperature and humidity simultaneously, which can make you read the detail temperature and humidity at any time High Accuracy: This indoor temperature range:-10-50(14-158), Humidity range:10%-99%;Temperature Accuracy:1/2, Humidity Accuracy:5%. Max/Min Records & C/F Switch Key: It can record the highest/ lowest temperature & humidity, so it's easy for you to check subtle temperature or humidity changes daily; You can press the C/F button to choose Centigrade or Fahrenheit. Large Screen Displays: Large LCD screen can be clear displayed the temperature and humidity values and characters, it suitable for indoor places like bedroom, kitchen and living room. Portable Design: Portable and simple use design, you can hang on the wall or place the table. It needs 1 AAA battery to power on. (Battery Not Included) Specifications: Temperature Range:-10-50(14-158) Temperature Accuracy:1/2 Humidity Range:10%-99% Humidity Accuracy:5% Resolution: 0.1(temperature)1% RH (humidity) Measurement interval: About 10 seconds Material: ABS Color: White Dimension: 11x10x2cm (4.33x3.93x0.78in) Battery: 1 AAA battery (Not Included) Note: 1. Don'for t immerse it in water, or it will be damaged. 2. Don'for t clean it with benzene, thinner or other solvent chemicals. If necessary, clean it with a soft cloth. 3. Please don'for t fall or hit hard , it's easy to cause trouble. 4. When the data is vague and the battery is not enough power, please replace a new battery and after reinstalling the battery, the high /low temperature humidity memory is be removed. 5.Please allow 0-2cm slight deviation due to manual measurement. Thank you! 6. It needs 1 AAA battery to power on (Not included in the package) Package Included: 1 x Indoor Thermometer Hygrometer