The automatic self-winding classic WW2 pattern Aeschbach* military watch with a small subsidiary dial second hand is based on the typical designs used by the German Luftwaffe and issued by the Reichsluftfahrtministerium (RLM / German Air Ministry) these watches did not remain in the possession of the Luftwaffe pilots and were issued to them on a mission by mission basis, to be returned to the quartermaster on arrival back at base. This watch is closely based on one of Aeschbach's WW2 designs, this watch is outwardly almost indistinguishable from the factories WW2 models and retains the acrylic crystal used on the original watches, also the original 15 Jewel hand-winding mechanical movement is upgraded to a 21 Jewel self-winding automatic which can also be manually wound if required. The watch offers the benefit of retaining the original outward appearance whilst having the advantage of a few discreet updates to improve its suitability for use on a day-to-day basis. The original WW2 watches made for the Wehrmacht, Kriegsmarine and Luftwaffe were produced by a large number of Swiss and German manufacturers some of which including Aeschbach originally founded in 1923 continue to exist to this day. This particular watch has a heavy stainless steel satin finish case made from Military Grade 316L stainless steel, subsidiary dial second hand, hacking function, black dial and luminous markings. Specification:? Case Diameter: 36.5 mm exc crown, 39 mm incl crown Lug to Lug 43 mm Thickness 13.5 mm Lug Type: Spring strap bars Dial Colour: Black ? Case Material: 316L stainless steel Caseback: 316L stainless steel? Crown: 316L stainless steel? Water Resistance: 5 ATM (50 m)** Movement: 21 Jewel Automatic ? Glass: Plexiglass / Perspex? Luminous Material: Luminova Serial number on caseback Strap: Black Leather Supplied in a box 24 Months Guarantee