With Zenith instruction manual, card dated May 2007 for ordering the definitive guarantee, original fitted presentation box and outer packaging.
The present watch is number 04 of the limited edition of 50 examples of the Grande ChronoMaster XXT Tourbillon El Primero in white gold, launched in 2004. Consigned by a private collector, it is furthermore preserved in very good overall condition.
After three years of research and development, Zenith presented its first tourbillon El Primero Grande Chronomaster XXT at the 2004 Basel World, featuring the new 4005 caliber movement composed of 319 parts. The use of this famous movement allowed to develop the fastest tourbillon in the world: beating at 36,000 vibrations per hour, this timepiece guarantees high precision with a chronograph accurate to a tenth of a second.
It furthermore features another highly ingenious feature: the calendar disc inserted between the bridge and the tourbillon carriage turns in the opposite direction, meaning while the latter revolves in 60 seconds, the date changes at midnight in the opposite direction.