This is an automatic self-winding classic WW2 pattern Siegerin* military watch with a small subsidiary dial second hand and is based on the typical designs used by the German Kriegsmarine (German Navy) during World War II, one feature which was common to all of the watches made for this branch of the German forces is that they tended to have the initials K.M on the dial which is short for Kriegsmarine, these watches also had light coloured dials in either cream or white as opposed to black which was used for other versions of the German forces. This watch is closely based on one of Siegerin'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. In WW2 Siegerin along with Selza were two of the leading manufacturers for the Kriegsmarine (German Navy) they also produced watches for the Luftwaffe, Fallschirmjäger (paratroopers), and Flak (anti aircraft) corps. Most of the German military watches at the time were fairly similar and shared much the same case size. This watch has a solid stainless steel case made from Military Grade 316L stainless steel, subsidiary dial second hand, hacking function, cream dial and luminous markings. For comparison the final image shows one of the original wartime watches so that you can see just how successfully the manufacturer has managed to create a watch which is extremely similar to the watches which they made in the second world war. 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: Leather Supplied in a box 24 Months Guarantee