Most variations on the Chronoscope watch are in polished and brushed metal (also obtainable with a matching Speedmaster-design bracelet), but Omega also provides a more superior-luxury Variation in an alloy it calls “bronze gold.” The alloy is much more than 40% gold which is built to supply the warm hues https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/