Longines Ladies PrimaLuna Watch # L8.112.4.16.6. Stainless steel case. Stainless steel bracelet. Swiss made quartz movement. White dial. Date calendar display at 3 o' clock position. Scratch-resistant sapphire crystal. Water resistant to 30 meters. Approximate case diameter: 26.5mm. Model Number: L8.112.4.16.6 L8.112.4.16 L8.112.4.1 L8.112.4 L8.112.