Features:Large LCD display， multi-function.Indoor & outdoor temperature display， indoor humidity display and time display.Memory of MAX & MIN measuring value.12 hour / 24 hour displaying system selectable.degree/??& F unit selectable.Clock， Date & Calendar function (month and date).Everyday alarm function.Desk-top placing or Wall Hanging.Low power consumption.High stability & accuracy.Specification:Device color: WhiteTemperature range: Indoor & Outdoor -50 ~ +70 degree (-58 ~ +158??F)Humidity range: 10% ~ 99% RHPower supply: 1.5V*1 (AAA size) not includedDevice dimension: 10.5*9.8*2.4cmDevice weight: 126gPackage size: 18*13*4cmPackage weight: 162gPackage including:1* Temperature & Humidity Meter1* User Manual