Fangrui Product Details 1. Desktop Digital Perpetual Calendar Study Alarm Clock 2. Can Display The Current Time, Date And Day Of The Week 3. Hijri And Gregorian Calendar Display Function 4. World Time Function 5. Prepare Azan Times For Major Cities Around The World. There Are A Total Of 1,500 Cities To Choose From. There Are 5 Sets Of Prayer Times Every Day. 6. Makkah Prayer Music 7. The Error Of Each Group Of Prayer Time May Be Adjusted, And Each Group Of Prayer Time Can Be Closed At Will. 8. Azan Time Reminder Function 9. Alliance Time Function 10. Alarm Function (one-time Alarmperiodic Alarm), And Can Issue Beep Alarm Prompts 11. Snooze Function, Snooze Time Is 5 Minutes 12. Temperature Function, Switchable Between Celsius And Fahrenheit 13. Daylight Saving Time (dst) Function 1224 Hour Format 14. Backlight Function 15. The Daily Alarm Clock Is A Scheduled Alarm Clock That Sounds At The Same Time Every Day. In Addition, This Alarm Clock Can Be Set Not To Sound On Weekends. 16. Audio Output (connect Speakers) 17. Dc 6v External Input 300ma 18. Prayer Time Differences Can Be Easily Modified To Suburban Cities To Adopt It 19. Crescendo Sound, All Alarm Clocks Have A Slight Wake-up Sound That Gradually Increases 20. Dimensions: 215x226x25.6mm