The l15 features o.h.m. (original historical movement) calibre AN0703A, obtained from AS 1883 produced in 1967 and modified in 2014. Mechanical automatic movement. The movement has been integrated with a shock absorbent system. ​ The upgrade makes this movement a perfect mix of great Swiss mechanical tradition with the most modern techniques of watch-making. ​ The ticking produced by 21,600 vibrations per hour creates a magic and charming sound that is typical of traditional mechanical timepieces. The 25 jewel calibre has been finely decorated with “Cote de Genève” finishing and embellished by “Perlage”. ​ Technical characteristics: flat Hair-Spring, Swiss “ancre” escapement, 25 jewels and 21,600 vibrations per hour. Calibre AN0703A, obtained from AS 1883 produced in 1967 and modified in 2014. Technical Specifics Case Size 3-9H: 39mm without crown Thickness: 10mm Movemenet: Mechanical movement, automatic with a power reserve of 34h Calibre: Caliber AN703A, obtained by AS 1883 produced in 1967 and turned by Armand Nicolet Dial: Classic dial with thin applied indexes. Case: Stainless Steel 316L Glasses: antiglare treated sapphire crystal and see-through screwed back Strap: Grey or Black big scales Alligator with Stainless Steel 316L deployment buckle Water resistance: 5 ATM / 50 MM Limited to 499 pieces (this one is number 390/499)