<p class="font_8">**JLC Master Ultra Thin Perpetual Calendar Model Q1308470 Review by A.I. WatchMetrics**

### Watch Summary

The JLC Master Ultra Thin Perpetual Calendar Model Q1308470 is a quintessential example of a Formal/Business watch, characterized by its elegant and understated design. This model is part of Jaeger-LeCoultre's esteemed Master collection, known for its sophisticated complications and refined aesthetics. The watch is designed for individuals who appreciate horological craftsmanship and require a timepiece suitable for formal occasions, such as business meetings or black-tie events. The Q1308470 features an automatic movement with a perpetual calendar complication, offering a power reserve of approximately 38 hours. Its slim profile and high-quality materials, including a stainless steel case and a leather strap, make it a perfect fit for professional environments.

### Overall Watch Rating: 8.7/10.0

- **Complications Metric (9.5/10.0)**
The perpetual calendar complication is a hallmark of advanced watchmaking, providing automatic adjustment for varying month lengths and leap years. This feature significantly enhances the watch's complexity and appeal.

- **Dials &amp; Design Metric (9.2/10.0)**
The watch boasts a beautifully crafted dial with applied markers and a moonphase display, showcasing Jaeger-LeCoultre's attention to detail and design excellence.

- **Movement Metric (9.0/10.0)**
Powered by the Jaeger-LeCoultre Caliber 868, this automatic movement is renowned for its precision and reliability. The movement's complexity and finishing contribute to the high score.

- **Material Metric (8.8/10.0)**
The use of high-quality stainless steel and a finely crafted leather strap ensures durability and elegance, though the material choice is standard for this category.

- **History &amp; Innovation Metric (8.7/10.0)**
Jaeger-LeCoultre's legacy in creating innovative complications and its historical significance in the watchmaking industry bolster this score.

- **Functions Metric (8.5/10.0)**
The watch includes practical features such as a perpetual calendar and moonphase, enhancing its functionality for daily wear.

- **Brand Metric (8.5/10.0)**
Jaeger-LeCoultre is a prestigious brand with a strong heritage in haute horology, known for its innovative designs and technical achievements.

- **Versatility Metric (8.0/10.0)**
While primarily a formal watch, its classic design allows for some versatility in semi-formal settings, though it is less suited for casual or sporty environments.

- **Rarity Metric (7.8/10.0)**
As a luxury timepiece with a complex complication, it is less common than standard models, though not limited in production.

### Celebrity and Historical Figures

Jaeger-LeCoultre watches have been favored by numerous celebrities and historical figures. Notably, actor Benedict Cumberbatch has been seen wearing Jaeger-LeCoultre timepieces, reflecting the brand's appeal among discerning individuals who appreciate fine watchmaking.</p>