Longines Traditional Watch Series L4.910.5.77.7 Automatic mechanical, 39mm white dial, interwoven rose gold / WHP036464

The core selling points of this wristwatch are: 
**Ultra-thin elegant design**: 39mm stainless steel case with 18K rose gold bezel (thickness only 8.5mm), paired with a silver brushed dial and 13 top-quality Vacheron Constantin VS-SI diamonds on the hour markers (total weight 0.032 carats), along with a rose gold chain strap and a three-fold safety folding clasp. The overall style is simple yet luxurious, suitable for business and formal occasions. 
2. **Powerful Automatic Movement**: Equipped with the Longines L888 automatic self-winding movement (modified based on ETA A31.L01), it oscillates 25,200 times per hour, has a power reserve of up to **72 hours**, and offers stable timekeeping while reducing the need for frequent winding. 
3. **Advanced Materials and Craftsmanship**: Double-sided anti-reflective sapphire crystal watch glass (for clear time reading), transparent back cover (for viewing the watch movement's polishing), the case and strap are made of stainless steel and 18K rose gold, balancing both texture and durability. 
4. **Practical Detail Configuration**: 3-position date display window (convenient for daily time reading), 30-meter water resistance (suitable for daily use), quick-release design for the chain strap (supported by some channels) enhances the flexibility of wearing. 
5. **Brand Classic Continuity**: As a representative piece of Longines' "Watchmaking Tradition Series" (formerly "Elegant Series"), it adheres to the brand's design philosophy of "Elegance is an attitude", using diamonds and interwoven gold materials to embody the quintessential example of a luxury formal watch. 
This model achieves a balance between the understated elegance and luxurious feel of a business formal watch through the combination of a slim body, a long power-driven movement and diamond details. It is a choice for those who want to purchase an entry-level luxury watch from Longines that combines both practicality and aesthetic value.