Neptune Tactical MA-15 AUDIBLE

For the development of the tactical Neptune MA-12 Altimeter the US special forces had a clear vision for tactical jumping: Small housing on the wrist with large numbers, no logistics for batteries/filters/maintenance and an easy to use product so the operator can focus on their main job. Due to the nature of tactical jumping the Altimeter/Audible  needs to be settable in a pressurized aircraft. The MA-15 A has all of the features the MA-12 has plus 3 audible Alarms.

The result was an Altimeter which is widely used by tactical units worldwide. Drop tested from 6 feet (1.2 m) with 1000+G, waterproof up to 6 feet for one hour, built from machined aircraft aluminum.

All tactical Neptune MA-12/MA-15 A are designed, engineered, produced and tested in DeLand, Florida, USA.




  • Unobtrusive footprint – significantly smaller than the majority of military altimeters
  • Robust machined aluminum case
  • Menu driven. Safe time! No need to read manuals again and again.
  • Protected raised buttons with sensory enhancements for tactile dexterity wearing thick gloves
  • USB rechargeable (lasts 2-6 weeks and if charged correctly works 10 years/500 charging cycles)
  • Waterproof up to 6 feet for one hour
  • Highly accurate electronic pressure sensor with a 40,000 FT range
  • Backlit digital LCD display with large numbers
  • *Simple* Zero Mode, Standard Offset Mode, two Absolute Offset Modes (programmable in-flight) with QNH or QFE
  • Canopy alarms
  • Last jump logging
  • ECO – friendly and safe 100 Dollar on batteries over 10 years
  • No batteries/filters/maintenance needed !
  • works in pressurized aircraft. 
  • Auto Zero has been reintroduced to the MA-15A
  • In normal use the MA-15A will auto zero in the same manner as the Atlas.
  • When DZ altitude (MSL) is set, auto zero is disabled.
  • switchable from inHg and mBar
  • 3 Audible freefall alarms, 3 canopy alarms 

This gives users the best of both worlds, autozero simplicity for training jumps and the ability to set absolute pressure and altitude of a remote DZ.



Length = 2.36 in (5.99 cm)
Width =1.69 in (4.29 cm)
Height =.57 in (1.45 cm)


1.5 oz (42.52g) (without mount)

Battery Type

Rechargeable Lithium Ion

Operating Altitude Range

Up to 40,000 FT MSL (12,192 M)

Operating Temperature Range

compatible with -40 to +80C temperatures when used inside a helmet


Up to 6 FT for 1 hour

Impact resistance

Withstands a 1M drop onto concrete