Omega Butterfly Series with American Alligator Leather Strap The most classic gentleman s business watch, unparalleled in its category. Available through special channels, 100% original factory order. Accessories can be serviced at major authorized retailers for a fee. Supports authorized comparative checks.Watch Specifications:. Model: ETA W movement most on the market are equipped with the 2824, which is a level lower . Dial size: 39.5mm. Case made from genuine imported 904L medical steel, currently the most precise in the world. Anti reflective sapphire scratch resistant glass. Extremely long power reserve with daily accuracy within the international standard of 5 seconds. Zero malfunctions. Comes with a full set gift box, perfect for gifting.