Partical charming Thermometer Hygrometer Digital Temperature for room Humidity Meter LCD Display Gauge 2 in 1 LCDdigital thermometer hygrometer meter. Display temperature, humidity. /F unit selectable. Memory of MAX & MIN measuring value. Humidity range: 10% ~ 99% RH. Humidity accuracy: 5% RH. Humadity display resolution: 1% RH./li&gt; Temperature range: -50 ~ +70 (-58 ~ +158F). Temperature accuracy: 1(2F)./li&gt; Temperature display resolution: 0.1 (0.2F). Operating voltage: 1.5V. Power: 1 x 1.5v Mini Batteries ( Included ) Size:3.5cm x 3.5cm x 3.5cm - 1.38inch x 1.38inch x 1.38inch.