Enamel throughout a system that takes 80 hrs. It comes in 18-karat white gold with a variety of shades of green or in 18-karat pink gold with blue hues, the two accented with diamonds. The base steel of every is very first sealed by using a transparent enamel then layers https://www.watchesworld.com/from-sean-to-daniel-tracing-the-evolution-of-james-bonds-iconic-watch-collection/