Breitling's second generation of the Superocean Heritage was introduced at BaselWorld 2017, being a gently refined version of the original 2007 version. The most notable change is the bezel insert which is now done in ceramic, while the hands and case are subtly refined. The regular versions are powered by the Tudor-sourced caliber B20, while the chronographs are powered by the well-known B13 / Valjoux 7750. Reference AB2010121L1A1 features a stainless steel case with a black ceramic bezel insert and a Green dial. Case Materials: Ceramic, Stainless Steel Bezel: Rotating, 0-60 (Dive) Glass: Sapphire Back: Closed Shape: Round Diameter: 42.00 mm Height: 14.35 mm Lug Width: 22.00 mm W/R: 200.00 m Dial Color: Green Finish: Sunburst Indexes: Stick / Dot Hands: Arrow