Whether the product parameters are classic models: Yes... Applicable gender: Male... Buckle type: butterfly buckle... Origin: Switzerland... Buckle material: stainless steel... Movement type: automatic machinery... Glass material: synthetic sapphire... Movement model: L888 ...Bottom: back through...Diameter: 42 MM...Diamond: Scale diamond...Strap color: silver/gold...Warranty: Global warranty...Strap material: stainless steel/18K gold...Product model: L2.893.5 .77.7...Dial color: silver...Dial shape: round...Waterproof performance: daily life waterproof...Case material: stainless steel/18K gold...Brand name: Longines...Brand story LONGINES Longines watch brand originated in 1832 in Saint-Yemi, Switzerland Valley SaintImier, has a long history of 175 years. Longines watches, with the flying wing hourglass as the brand logo, is a watch manufacturer integrating tradition, elegance and sport. As a long-time World Athletics Championships timer and partner of the World Federation, Longines watches are renowned the world over for their elegant timepieces. Longines entered formula racing with craftsmanship and also partnered with Italian car brand Ferrari. Product Display Care Instructions