The Top Gun Chrono 3799-01 has a diameter of 46 mm (but in the IWC service Database it says 44 mm). The other limited editions 3799-03 (Zegg) and 3799-04 (Carlson) are also listed with 44 mm. So which is the correct size, does the Top Gun have 46 mm and the others 44 mm, or do all have 46 mm or 44mm ?