This is an Oris "BC3" automatic wristwatch. The BC3 is the third generation model of the BC (Big Crown) series. The Big Crown series, which debuted in 1941, allows for crown operation even while wearing gloves. It gained popularity among pilots of the U.S. Army Air Forces and became one of Oris's signature models. The dial is black with Arabic numeral indexes, providing high legibility. The day of the week is displayed in English at the 12 o'clock position, and the date is displayed at the 6 o'clock position. The hour and minute hands and the dots on the outer edge of the indexes are luminous. The case is made of stainless steel, and the back cover is a screw-back type. The glass is sapphire crystal, which has the advantage of being scratch-resistant. The crown is large, with a diameter of 6.6mm, making it easy to operate. It has a quick-set calendar function and a manual winding function, making it highly practical. The strap was replaced with a new one (made by Di-Modell) at the time of purchase and has been used a few times. It is made of cowhide, is waterproof, and is thick but soft. *Everything shown in the images is included. *This is a used item, and there may be some scratches due to its age. Please refrain from purchasing if you are looking for a perfect item. *Returns are not accepted to prevent swapping. Cancellations and claims are also not accepted. Thank you for your understanding. Please note that the listing may be removed if it does not sell within a certain period. We kindly ask that only those who understand that this is a used item purchase it.