The Type 1S W features a mat White dial with convex discs displaying hours, minutes, seconds, and day of the week, powered by a specially customized ETA 2892/2 base caliber. Its slim ergonomic case in Grade 5 Titanium has been designed around wrist and is completed with a Cognac grained calf leather strap with polished ardillon buckle. The Type 1 Slim differs from the rest of the Ressence collection in its visual balance of modernity and complexity.