Longines - Collection Gorgeous Mechanical Ladies' Watch.Type: 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).Crystal: Sapphire Crystal Glass.Strap Options: 316 Stainless Steel Bracelet, Genuine Cowhide Strap, Crocodile Leather Strap.Water Resistance: 30m (3 ATM).Exquisite craftsmanship and perfect quality assurance make this a must-have for every woman!