Longines Master Collection Automatic Diamond Hour Markers Dial Date Stainless Steel Watch# L2.518.4.57.6 (Men Watch). Band Color: Silver. Dial Color: Black. Display Type: Analog. Item Shape: Round Shape. Band Material: Stainless Steel. BandLength: Men Standard. Case Size Diameter: 36 millimetres. Case Material: Stainless Steel. Clasp Type: Deployment Buckle. Bezel Material: Stainless Steel. Bezel Function: Stationary. Crystal: Sapphire. Water Resistant Depth: 30 meters. Movement Type: Automatic. Calendar Type: Date. Diamonds: Dial set with 12 Wesselton VS diamonds, for a total of 0.055 carats. Case back: Transparent Case Back with Sapphire Crystal. Model Number: L2.518.4.57.6 L2.518.4.57. L2.518.4.57 L2.518.4.5 L25184576.