Longines Silver Automatic Self Winding Watch # L2.718.4.70.6 (Men Watch). Band Color : Silver-Grey. Dial Color : Silver. Band Material : Stainless Steel. BandLength : Men Standard. Case Size Diameter : 42 millimetres. Case Material : Stainless Steel. Clasp Type : Hidden Folding. Bezel Function : Stainless Steel. Crystal : Scratch Resistant Sapphire. Water Resistant Depth : 30 meters. Movement Type : Automatic Self Winding. Model Number:L2.718.4.70.6 L2.718.4.70. L2.718.4.70 L2.718.4.7.