Mudder Digital Indoor Thermometer Hygrometer with Alarm Clock & Date, White/Black Multi-function of indoor weather station and clock with alarm and calendar Desktop placing or wall hanging, 12/ 24 Hours mechanism clock and hourly chime (can be set) Can record the maximum/ minimum temperature and humidity;  or  unit can be selected Easy to read; Large screen in 3 x 2.5 inches with 5 seconds night light Temperature accuracy (at 0 ~ 20C): 1C, 2; Humidity accuracy (10% ~ 99%, at 25C): 5% RH