1 field traveler / climber / Explorer -- for outdoor adventure, indicating distant targets and issued a distress signal
2 astronomy enthusiasts - used to astronomy refers to the star, green laser beam is a very beautiful green line. It is suitable for the observation of the stars at night, can accurately indicate the location of the stars
3 mining / construction personnel - for the long distance accurately indicating / measuring the building
4 military command or exercise: when you to your subordinates that your target in the air which direction or in distant hillside
5 Guide: for distant attractions instructions explain, behind you the number of group members can clearly see your point of attraction. It may also be used for fire, floods, earthquakes and other emergencies repair site command