Features: 1. Time from 2000 to 2049. 50 years automatic Gregorian calendar and automatic week. 2. Automatic temperature measure (-09c~51c); Measure precision :?c; Make a measure per 10 seconds. 3. 24 hours system. 4. Year, Month, Date, Hour, Minute, Second, Week, lunar calendar and temperature display 5. Four azan alarms everyday: Five voices available for each alarm (without display). 6. Working current : 8UA.It can work above 1000 days with build-in battery when power off. 7. Chime reminding (8:00-0:00) 8. Good shape design, the best choice for home or office. Unit size:25.5*20.5*3.5cm