Longines combines the traditional aesthetic of the brands original timepieces with cutting-edge watchmaking technology. The Longines Master Collection embodies Longines classical elegance and exceptional quality craftsmanship. Stainless steel and 18ct yellow gold 25.5mm case. Silver 'barleycorn' dial with diamond indexes. Automatic L592 movement. Self-winding mechanical movement beating at 28'800 vibrations per hours. 40 hours power reserve. Ref: L21285777. Product Information Brand: Longines Movement: Automatic Case Material: Stainless Steel and 18ct yellow gold Case Size: 25.5mm Type of Strap: Stainless steel and 18ct yellow gold Bracelet Glass Material: Sapphire Crystal Dial: Silver Diamonds: Dial indexes set with 12 Top Wesselton VS-SI diamonds, for a total of 0.034 carats Water Resistant: 30m Gender: Ladies