Marathon General Purpose Mechanical Limited Edition watch. It's 36mm and was made in 2014. I am the original owner and the watch is in excellent condition. This watch is a numbered limited edition and features a new, old-stock Benrus-signed ETA 2801 manually-wound movement. Comes with all of the original documentation, certification documentation and boxes. Comes with an unworn Maratac strap as well as a handmade BUND watch strap (by Difues Leather; only worn once). There is a very nice Worn & Wound review here for more information.

Was $600 new. Asking $300.

Case: 316L Steel, screw-down case back
Movement: ETA 2801, manually-wound, 17 jewels, hacking
Dial: Black
Lume: Tritium gas tubes (dial and hands)
Crystal: Sapphire
Strap: Black nylon
Water Res.: 3ATM (~100 feet)
Dimensions: 36mm width
Thickness: 11mm
Lug Width: 16mm
Crown: Pressure fit

More photos here.