Longines PrimaLuna Watch # L8.110.4.16.6. Stainless steel case. Stainless steel bracelet. White dial color. Quartz movement. Scratch resistant sapphire crystal. Date display at 3 o' clock. Approximate case diameter 26.5mm. Approximate case thickness 8mm. Water resistant to 30m. Model Number: L8.110.4.16.6 L8.110.4.16 L8.110.4.1 L8.110.4 L8.110.