The NAV SD is designed for the competition pilot, having all the bells and whistles fly comps fast and effectively but without the Live tracking functions.

Variometer/Altimeter Features:
- Buzzer/near thermal sound.
- Ultra sensitive Variometer with 10 readings per second and 10 cm resolution.
- Configurable vario digital filter and integration values.
- Fully configurable Vario Sound (frequency, increments, frequency/vertical speed relation,….).
- 6 Sound Levels (configurable by menu, or using a key).
- Automatic mute, keeps vario silent until takeoff.
- Altitude adjustment using QNH.
- Automatic altitude adjustment from GPS.
- 3 independent altimeters.