OM53  Omega Aqua Terra Railmaster XXL. Reference 231.13.49.10.06.001. Watch measures a very cool 49.2mm and is made from steel. Manual winding Omega movement caliber 2211 which is COSC certified. Sapphire crystals on both sides of the case. Waterproof 15ATM or 150 meters. Functions are hours, minutes small seconds. This watch is fitted with an original Omega black crocodile leather strap with steel pin buckle. Inner stitchings of the strap are in a sportive red. Naturally this watch is complete with the original box and papers dated December 2011. Please be aware that the instruction booklet has gone missing. Please also be aware that this watch has hardly been worn and is therefore still in mint condition. Fantastic watch chronometer certified and it is getting harder to find a good one these days!