====== Patek Philippe Perpetual Calendar 5159 ====== {{wst>image_cr|Patek Philippe|Ewiger Kalender Ref. 5159|Perpetual Calendar Ref. 5159}} The **Perpetual Calendar Ref. 5159** is a wristwatch from [[Patek Philippe]]. At [[Baselworld]] [[2007]], [[Patek Philippe]] presented this [[perpetual calendar]] with [[retrograde]] [[hand date]] from the center of the dial. The watch features an [[automatic movement]] and a case in the classic [[officer's watch|officer's style]]; the dial is hand-[[guilloché]]. **Reference:** * 5159G white gold * 5159J yellow gold **Movement:** * [[Self-winding]] [[manufacture movement]] [[315 S QR]], 21,600 A/h * [[Geneva Seal]] * Gyromax [[balance]] * Unidirectional winding [[rotor]] in 21 ct gold * 30 [[jewels]], 9 [[bridge]]s, 361 parts * Power reserve 48 h **Case:** * [[Yellow gold]] / [[white gold]] * Ø 38 mm, H 10.79 mm * [[Sapphire crystal]], [[sapphire crystal]] caseback * [[Waterproof]] to 3 atm **Dial:** * Silver/opaline, hand-[[guilloché]] **Functions:** * Hours, minutes, [[central seconds]] * [[Perpetual calendar]] with [[moon phase]] and [[retrograde]] [[hand date]] **Wristband:** * Hand-sewn alligator strap with [[deployment clasp]] {{tag>Watch_models Watches_with_moon_phase Watches_with_perpetual_calendar Patek_Philippe_models Patek_Philippe_Officer's_Watch_models}}