Swiss Concept's Series SE Collection features the Nautical Classic, Nautical Luxury, Nautical Sport, Royal Classic, Royal Sport, Racing Pro, Racing Classic, Racing Elegance and Racing Special Editions. Each model is hand-assembled in either PVD-coated matte black, 316L stainless steel, 18 karat plated rose gold, 18 karat plated yellow gold or a series of striking two-tone combinations, all inspired by the finest high-end watches at the pinnacle of the Swiss watchmaking industry. All Series SE Apple Watch Cases will fit the Apple Watch Series SE with a case size of 44mm.