The -1 can display temperature, relative humidity, and time on a large numeral LCD display screen at the same time. The item also offers the Date and Day at the push of button, along with Max and Min temperature readings, perfect for home or office. Features - Color: mainly white. - Shell material: durable hard plastic. - and temperature & humidity meter. - Can show temperature, humidity & time at same time on the large LCD display, for easy to read. - Memory of MAX & MIN measuring value. - 12-hour and 24-hour displaying system selectable. - Fahrenheit or Celsius readout (changeable by selecting F or back). - Integral-hour alarm function. - Alarm function. - Clock and Calendar function (month and date). - Desktop placing or wall hanging. - Power: 1 * 1.5V AAA Battery (included). Specifications - Temperature range: -10 degree centigrade~+50 degree centigrade. (14 fahrenheit scale~+122 fahrenheit scale). - Humidity range: 10%~99%RH. - Resolution: temperature: 0.1 degree centigrade(0.1 fahrenheit scale), humidity: 1% RH. - Accuracy: temperature: ± 1 degree centigrade(1. scale), humidity: ± 5%RH (40%~80%). - Storage condition: -20 degree centigrade~60 degree centigrade, 20~80%RH Package list: 1 * -1 LCD Screen Digital Hygrometer Temperature & Humidity Meter with Clock (White) 1 * 1.5V AAA Battery