Watch Yema Yachtingraf Tourbillon Mareographe 75th Anniversary Limited Edition Steel Rubber Bracelet 42.5M

FRENCH MANUFACTURE CALIBER
Caliber entirely designed and developed by Olivier Mory. Micro-components (bridges and plates) manufactured directly in our YEMA workshops in Morteau, including assembly, adjustment and testing.

ACCURACY OF -3/+7 SECONDS
Optimized mechanical precision with chronometer-like performance (COSC).

TOURBILLON COMPLICATION MARÉOGRAPHE
Prestigious caliber offering high performance thanks to its ingenious architecture and high-quality Franco-Swiss components. Unique lunar-hour complication with tide-cycle display.

POWER RESERVE 105 HOURS
Increased power reserve thanks to a large barrel for optimized winding.

DOUBLE-DOME SAPPHIRE CRYSTAL & BEZEL
The rotating bezel stands out both for its complex design and for the quality of its finish. It comprises an insert with a minimalist 0-60 graduation and a luminescent marker at 12 o'clock. Both elements are covered and protected by a scratch-resistant sapphire dome requiring a complex and meticulous machining and manufacturing process. The lower part of the bezel is precisely notched to facilitate use of its unidirectional rotation system.

This collection timepiece is also equipped with a high-quality double-domed sapphire crystal 2.20 mm in height, offering improved legibility, enhanced resistance and a resolutely vintage look.

ICONIC YACHTINGRAF DIAL
The dial features a striking black sunburst finish and borrows the aesthetic codes that made vintage Yachtingraf models so successful. The red and blue colors of the Maréographe complication and the famous Super-LumiNova-coated applied "baton" steel hour-markers immediately echo the Yachtingraf of the 1970s. The open heart of the dial at 6 o'clock reveals the animated Tourbillon mechanism. The Y of the YEMA logo is directly inlaid into the small hand of the Tareograph counter, leaving the whole dial very uncluttered.

STEEL / BRONZE CASE - SAPPHIRE CRYSTAL CASEBACK
The caseback features a sapphire crystal, allowing the caliber to be admired in all its splendor, and preserving its 10 BAR water-resistance. The case, available in steel or bronze, is finished with a vertical brushed finish, polished bevelled lugs and a circular brushed bezel, combining sportiness and elegance. With a diameter of 42.5mm and a thickness of 12.3mm (14.5mm with the double-domed sapphire crystal), the Yachtingraf Tourbillon Maréographe offers balanced proportions for a timepiece equipped with a tourbillon complication caliber. The 20mm lugs allow a wide choice of straps. Each case is engraved with a unique serial number (XXX-XXX) and the Limited Edition number (XX/75).

RUBBER FKM VITON®BRACELET
The RUBBER FKM VITON® bracelet has been designed for intensive use in all extreme conditions, thanks to its lightweight, flexible and highly dust-resistant VITON® material. The bracelet also features an elegant folding clasp in either 316L stainless steel or IP bronze.

TOURBILLON CALIBER
Invented by the famous French watchmaker Abraham-Louis Breguet in 1795, the tourbillon is a device found in some high-end mechanical watches, designed to improve the precision of the timepiece. It consists of a rotating cage containing the balance wheel and balance spring, the escapement wheel, the anchor and the seconds wheel that drives it. The cage rotates 360 degrees every 60 seconds, counterbalancing the adverse effects of gravity on the watch's smooth running. The tourbillon is the embodiment of watchmaking expertise, and only a few Manufactures have mastered the art of creating this masterpiece.

MARÉOGRAPHE COMPLICATION
The Tideograph complication is set in an elegant sub-counter at noon on the dial. To make this magnificent phenomenon visible, it indicates high tide when the small hand is at the top and low tide when the small hand is at the bottom, making a half-turn of the dial (passage from high tide to low tide) every 6h 12m 7.89s and a full turn every 12h 25m 15.79s.