uxcell Portable Rolling Folding 3 in 1 Hygrometer Thermometer Alarm Clock Material--Made of high quality plastic construction. Simple to show you the time, monitor temperature and relative humidity. Dimension: 6.1cm in length and width, 6.5cm in height; Range of the humidity: 0~100% Range of the temperature: -10~+130F, -20~+50C; Weight: 131g Package Content: 1 x Alarm Clock