Steel
32.7 mm stainless steel case, sapphire back, diamond-set 18K yellow gold bezel, domed scratch-resistant sapphire...
32.7 mm stainless steel case, sapphire back, 18K yellow gold bezel, domed scratch-resistant sapphire crystal...
41 mm stainless steel case, transparent back, self-locking crown, 18K yellow gold bezel with ceramic...