"Special considerations have to be given to watches to meet special ops criteria like curved, non-glare crystals, green LED back lights that won't flare out with night vision goggles," says Rusty Squire, President of the Heart Rate Watch Company. He adds, "It is the data and navigation qualities of these military watches that make them so special."

Tactix is water resistant to 50 meters. This watch also contains GPS, a barometric altimeter, 3-axis compass, plus it can record up to 1,000 waypoints and 10,000 track points. "The trackback feature can also guide you right back out the way you came in," says Squire.

The US Tides feature and Jumpmaster mode are invaluable to both amphibious and airborne operations. Plus, the Garmin Tactix can remote control the Garmin VIRB Elite HD action cameras.

Tactix displays sun/moon information, a hunt/fish calendar in addition to basic watch functions such as alarms, tones, vibration alerts, a timer, stopwatch and world clock with the ability to display several times zones at once.

Garmin Tactix can also pair up with a Garmin Tempe sensor to deliver and record very accurate real-time temperature data.