Automobile clock manual: 1.In normal mode, there will show hour,minute,second and week. Push D to show date and push "S" To show alarm time. 2.Adujust alarm Time:Push M two times to enter into alarm mode;Push S to choose Hour & minute;Push D to adjust right time; Push M to return. 3.Adjust Real time: Push M Thrice to enter into adjust time mode;Push S to choose second,minute ,hour day,week,month in order;Push D to adjust correspondence number for right volume and finally;Push M to return to Normal mode. 4.Stopwatch function:Push M for one time into stopwatch function mode,the beginning state is show as 00:00:00; Push D to enter into recording time;Push D again to stop & push;Push S to return into beginning mode 00:00:00. 5.Adjust ON/OFF alarm mode:In normal state, push "S"and "D" you can choose alarm on or off.When alam operates, the symbol will be displayed on