The Franck Muller Long Island 1100 DS R XL in 18k White Gold is an iconic, Art Deco-inspired luxury timepiece famous for its complex mechanical movement and elegant, oversized rectangular geometry. Known for the brand's "Master of Complications" pedigree, this particular reference features an impressive double retrograde seconds complication.

The hallmark of the 1100 DS R mechanism is its unique display of tracking time. Rather than moving in a complete circle, the seconds display is divided into two separate, fan-shaped sectors on the lower half of the dial: 

1. First Sector (0–30 Seconds): The first blued hand sweeps along a retrograde arc. Once it hits the 30-second mark, it instantly springs back to zero.

2. Second Sector (30–60 Seconds): The moment the first hand resets, the second hand immediately takes over, sweeping its own arc to track the remaining 30 seconds before snapping back.

3. Brand & Model: Franck Muller Long Island Bi-Retrograde (Ref. 1100 DS R)

4. Case Material: Solid 18k White Gold with a high-polished finish

5. Case Shape: Monolock, curved rectangular design that contours comfortably around the wrist

6. Case Dimensions: XL size (approximately 32.5mm width x 54.5mm total lug-to-lug length)

7. Dial Type: Silvered Guilloché dial decorated with signature stylized Art Deco Arabic numerals

8. Movement: Swiss Mechanical Automatic (Self-winding)

9. Hands: Blued steel spade hands.