The Grenen Samsø Series is Skagen most-sustainable watch to-date. This watch features a 37mm #Tide Ocean Material® case, caseback and dial. The ocean blue dial features a visible solar-powered movement with a bio-based nylon movement holder. A Bio-based optical grade nylon crystal, a multicolor 100% rPET Woven Strap with recycled stainless steel buckle and leather keepers. Skagen is a member of Leather Working Group. Watch strap is interchangeable. #Tide Ocean Material® Caseback is not engravable.