Electronic ink is a proprietary material that is processed into a film for integration into electronic displays. Revolutionary in concept; electronic ink is a fusion of chemistry; physics and electronics to create this new material.Band Color : Black Leather; Band Width : 22mm near case; 20mm near clasp/buckle; Bezel Color : Silver; Case : Silver + Circle-shaped; Case Finish : Polished + Stainless Steel; Case Thickness : 15mm; Case Width : 45mm; 46mm with crown; Clasp / Buckle : Strap Buckle; Dial : Crystals + digital; Hand Color : Black; Movement : Other + quartz; Time Zones : Single; Water Resistance : 5 atm;