1 is not a long bright background light， according to the top middle of the rectangular watch {snooze / light button}， lit backlight 

(2) When the alarm time is reached and the voice sounded the alarm point for 60 seconds. 

3 refers to when the snooze alarm sound is loud， click {snooze / light button} beeping sound stops after about 4-6 minutes after the alarm sounds again sounded. 

Afternoon is the screen display PM， when the morning is not displayed AM， 12-hour clock.