Lock mode sign : After you lock onto flag successfully, the circle on flag sign
will show.(As the picture shows)
Method: Align the flag and keep still, pressing "POWER" button to get distance.
At the same time, you will feel vibration and the circle on flag sign will show.
Method: Pressing "POWER" button and scan from far to flag, you will get distance
and feel vibration. At the same time, the circle on the flag sign will show .