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.

Features

• Unobtrusive footprint – significantly smaller than the majority of military altimeters
• Universal mounting through four screws in the bottom housing
• 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
• Standard velcro wrist mount bracket with space for chemical warmer for cold weather operations
• 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.