- Longines - Series Gorgeous Mechanical Ladies' Watch. Style: Ladies' Watch. Movement Model: Swiss ETA2671 Automatic Mechanical Movement, the core of quality assurance. Case Material: 316 Stainless Steel. Dimensions: Inner Diameter 25.5mm, Thickness: 8.5mm 1:1 Scale. Watch Glass: Sapphire Crystal. Strap Options: 316 Stainless Steel Bracelet, Genuine Cowhide Strap, Crocodile Leather Strap. Water Resistance: 30m, rated for three levels of water resistance. Exquisite craftsmanship and perfect quality assurance make it a possession every woman deserves!