The Franck Muller Vanguard Skeleton Seven Days (Reference: V41 S6 SQT 5N NR) is a luxury haute horlogerie timepiece that blends the brand's iconic curved geometry with complex open-worked architecture. Crafted in a 41mm 18k rose gold tonneau-shaped case, this specific model features a striking skeleton dial and a high-performance in-house manual-winding movement.

• Case Architecture: Distinctive, hand-polished Cintrée Curvex tonneau profile spanning 41 mm in width, 49.95 mm in length, and roughly 12.3 mm in thickness. 

• Material Composition: Solid 18k rose gold (5N) case featuring a sleek black-applied horizontal center insert for a multi-layered contrast. 

• Movement: In-house Caliber FM V41 S6 SQT manual-winding skeleton movement featuring beautifully hand-beveled bridges, flank-drawing finishes, and high-end geometric structural aesthetics. 

• Power Reserve: Exceptional 7-day power reserve driven by a highly efficient, manual winding system.

• Dial & Readability: Sapphire skeletonized layout with float-effect architecture, black inner compass scale on the outer ring, and luminescent black-applied hour/minute hands.

• Sub-Complications: Sub-seconds tracking register located cleanly at the 6 o'clock position.

• Case Back: See-through sapphire crystal exhibition back, revealing the intricate dual-sided handiwork and master-level assembly. 

• Strap Integration: Premium black alligator leather layered seamlessly over a rubber core, utilizing matching gold stitching and an 18k rose gold tang-style buckle.