Being in the presence of what we can now refer to as the "glassier and louder minute repeater we've listened to" since pocket watches, was a once in a lifetime opportunity. Officially presented this week at the SIHH 2015, the Audemars Piguet Royal Oak Concept Acoustic Research Episode 1 —Etude Acoustique— is product of exceptional engineering but also years of research to create the most unique and superb minute repeater to date. The Audemars Piguet Royal Oak Concept Acoustic Research Episode 1 —Etude Acoustique— is without doubt, one of the most innovative concept watches created by a Swiss haute horlogerie watchmaking house. The result of an in-depth eight year sound research program with three patents pending, this new Royal Oak Concept watch, a unique prototype, is not for sale at the moment. However, we envision Audemars Piguet releasing 'for sale' pieces moving forward.