100% brand new and high qualityFeatures:Indoor / outdoor temperature、 indoor humidity display.¡ãC / ¡ãF temperature switch display、 comfort display.Indoor and outdoor maximum and minimum temperature memory function.Memorized MAX/MIN indoor temperature and humidity value automatically.With back stand and magnetic stick at back side、 convenient to place.With a wired external sensor that can be strung to the outside of your house to sense external temperature as well as a built-in sensor to simultaneously measure the indoor temperature.Color: As the pictures shownUse battery: 1 * 1.5V (AAA) battery (Not included)Size: app.7.9cmx7.2cmx1.3cm/3.11''x2.83''x0.51''Indoor temperature: -10¡æ¡«+50¡æ (+14¨H ¡« +122¨H)Outdoor temperature: -50¡æ¡«+70¡æ (-58¨H ¡« +194¨H)Indoor Humidity: 20%RH¡«90%RHPackage includes:1 x Digital Thermometer Hygrometer1 x User Manual