- Longines - Series Gorgeous Mechanical Women's Watch. Watch Type: Women's 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 size). Watch Glass: Sapphire Crystal. Strap Options: 316 Stainless Steel Bracelet, Genuine Leather Strap, Crocodile Leather Strap. Water Resistance: 30m (3 ATM). Exquisite and luxurious craftsmanship, ensuring perfect quality for every woman to own!