Features:1、Time projection function・ The projection distance・1~5 meters The projection angle of rotation・ 180＜2、Color display3、Temperature and Humidity display・ The range of Temperature : 0＜C~50＜C/32＜F~122＜F The range of Humidity ・ 20%RH~99%RH4、Date display: 2001~20995、Alarm clock6、Battery・ 2*AAA(Owned)7、Size: 15x11x2.5 cm8、Function button: MODE、 UP、 DOWN、 MAX/MIN、 SNZ(Snooze Mode)、 Reset.