All Christopher Ward Bracelets are made of 316L stainless steel which is always hand finished. The coloured versions make use of the same PVD process that Longines use. Gold versions are 18 carat gold plated. Rose Gold is standardised on Swiss standard 5N, again 18 carat, and our Corax range uses PVD black. All bracelets utilise an engraved butterfly deployment system which is supremely comfortable and secure on the wrist