The crystal (lens) of the GPM is made from sapphire ensuring the highest possible sratch resistance
The Marathon Pilot's Chronograph model (NATO Supply Number: 6645015440408) features a 7750 ETA Valjoux Automatic (Self Winding) 25 jewel Swiss movement with “Date & Day” display and "Rapid Date and Day Correction”
It impresses not only with a screw-down crown including flank protection at the 10 o'clock position and magnetic field protection
bidirectional rotating bezel with ceramic inlay and with luminous material Superluminova C1
the watches were used as well as navigation instruments
Marathon Diver's Automatic Medium H3 The crystal (lens) of theThe Marathon Diver's Automatic Medium is a dive watch built to ISO 6425 standards but is a smaller, medium sized, version of Marathon's line of diver's watches, perfect for someone who wants a tough, reliable, and military issue dive watch, yet prefers a reduced size watch that is just as tough as its larger brothers. This is a dive watch certified for water resistance down to 30 ATM – 300 meters (1,000 feet) underwater. The Diver's Automatic