Just serviced by Patek Philippe, under their international warranty for two years, and fitted to a brand new black alligator Patek strap with 18ct yellow gold pin buckle. 

Retailed in April 2006, this 18ct yellow gold gentleman's Calatrava ref. 3919 with its distinctive hobnail bezel has proved to be one of Patek's most iconic designs. Discreetly sized at 33mm, and slim enough to wear under a shirt cuff, the elegant black Roman numerals contrast beautifully against the porcelain white dial. Manually-wound (calibre 215PS) mechanical movement with 2-day power-reserve, water resistant to 30m.