Perpetual calendar chronographs hold a special place in the hearts of Patek Philippe collectors. It’s been said that this complication by this brand has appeared on the covers of more auction catalogs than any other. Over the years, the 1518, 2499, 3970 and 5970 have attracted legions of devoted followers. The downside of producing beloved icons is that you alter them at your own risk, never mind replacing them entirely.

When the 5270 came along in 2011, it was the first in a lineage dating to 1941 to offer an entirely in-house movement. Earlier models used third-party ebauches, heavily modified by Patek. So you would think the new model would be instantly embraced by the faithful. In fact, the new model produced a fair amount of controversy. Now, four years later, it’s the turn of the new Calatrava Travel Time Ref. 5524 to generate controversy, while the latest 5270 R, in rose gold with a silver opaline dial, debuted to rave reviews. It’s one of our favorite new watches of the show. Here are a few of our live images, with complete technical information below.

Technical Data

– Case diameter: 41 mm
– Case material: 18k rose gold
– Interchangeable full back and sapphire-crystal case back
– Water resistant to 30 meters
– Manually wound mechanical chronograph movement
– Caliber CH 29-535 PS Q
– Central chronograph hand and instantaneous 30-minute counter|
– Perpetual calendar
– Day, month, leap year and day/night display in apertures
– Date indicated by hand
– Seconds subdial
– Tachymeter scale
– Moon phases
– Silvery opaline dial, gold applied hour markers
– Alligator strap with square scales, hand-stitched, matte dark brown, fold-over clasp
– Fold-over clasp
Movement

– Diameter: 32 mm
– Height: 7 mm
– Jewels: 33
– Parts: 456
– Power reserve: With the chronograph disengaged: min. 55 hours – max. 65 hours
– Balance: Gyromax®
– Vibrations/hour: 28 800 (4 Hz)
– Hallmark: Patek Philippe Seal