Set up groups of your chosen audible alarms to notify you of different altitudes during freefall and under canopy.
N3A has four groups of labeled alarms, each with three altitude settings. Each of these groups can be set as either freefall or canopy alarms, and using the NMU you can create your own customized alarm group names.
What you see:
N3A will play your music from your mp3 player until you reach the altitude that your alarm is set to go off, at which point your chosen alarm will cut through your music.