54221Hi, stop your steps Home Wall Mounted Thermometer Mechanical Hygrometer Without Battery Mini Temperature And Humidity MeterFeature:The outer case is made of aluminum alloy, small size, strong and durableMechanical thermometer and hygrometer, without batteryWith fine and clear dial scale, easy to readIndoor and outdoor mini round aluminum alloy hygrometer thermometerSuitable for homes, offices, workshops, schools, shopping malls, warehouses, etc. Specification:Type: Mini Thermometer HygrometerColor: Green + White Size: Approx. 57*12.5mm (Dia. * H)Temperature Measurement Range: -30 - 50 degrees Celsius (-20 - 120F)Accuracy: +/-2 degrees CelsiusHumidity Meter Range: 10 - 100% rhAccuracy: +/-5% rh (40 - 70% rh)Note:Item color displayed in photos may vary slightly when showing on computer monitor since monitors are not calibrated same. Please allow 1-3mm slight deviation due to manual measurement. Package Included:1*Hygrometer Thermometer