Roamer Swiss made, 7 year guarantee. Roamer Watch Rockshell Mark III Chrono 220837 48 75 20. Roamer oF Switzerland has been synonymous with high quality Swiss watches in combination with classically elegant designs since 1888. The brand steadily continues its success story with ongoing innovations, excellent materials, exquisite craftsmanship and precise Swiss movements. Perfect attention to detail and an exceptional & personal commitment makes ROAMER’s timepieces truly unique.