Top-notch luxury! This Longines Master Collection genuine diamond model is an original piece, a century-old classic. Its ultra-thin design showcases a minimalist quality on the wearer's wrist. With a diameter of 40mm, it features a silver-tone folding safety clasp and a push-button release mechanism, along with a transparent case back revealing a Swiss automatic mechanical movement that is visually captivating! It has a water resistance of 30 meters, a lug width of 21mm, and a silver grain patterned dial set with 13 high-quality VVS1-grade diamonds, totaling 0.059 carats. Each diamond watch comes with a diamond certificate issued by the authoritative Chinese GTC certification agency, ensuring that every stone is a genuine diamond. Each certificate bears a unique inspection number that is never duplicated, and you can scan the official website for verification! The watch features silver-plated polished hands, scratch-resistant synthetic sapphire glass, and elegant diamond hour markers that complement the simple yet beautiful central blue steel hands, making the time clear and intuitive. The movement adopts the Swiss SW200 chronometer-certified highest-grade automatic mechanical movement, with original parts sourced from authorized factories. The strap, clasp, and case are all made from super durable 316 stainless steel, as per the standards set by Swiss OEM factories, ensuring exceptional wear resistance and corrosion resistance! The ultra-clear case back displays English numerical information, and the color and length of the hands are evident, with each watch having a unique identification number. The case back, hangtag, and warranty card all share the same code. The protective film has not been removed, allowing for returns or exchanges. The movement is covered by a lifetime warranty against human damage.