To accompany every instant of an active life, Patek Philippe has endowed your timepiece with the caliber CH 28-520 C – a self-winding flyback chronograph movement epitomizing the union of tradition and innovation.
It combines classic column- wheel control with the modern, vertical disk clutch that prevents hand bounce and rebound when starting the chronograph. Because this clutch is virtually friction-free, the sweep chronograph hand can also be used as a continuously running second hand. This eliminates the need for a seconds subdial.
Thanks to the flyback function, the owner can actuate the pusher to initiate a new measurement while the chronograph hand is running, which makes a reset superfluous. The transition from the chronograph to the running seconds function allows the watch to be synchronized with a time signal using the stop seconds feature.
The large monocounter that dominates the lower half of the dial ensures a highly legible display of the 60 minutes of elapsed times. Completing these indications is an aperture for the date at 3 o’clock with instant change in a fraction of a second.
Patek Philippe is reasserting the “contemporary casual chic” spirit of the Aquanaut flyback chronograph with the first white gold version of this self-winding model, combined with an elegant midnight blue color for the dial and matching composite strap.
The dial is enlivened by a black-gradient rim. Water-resistant to 120 m, the case is enhanced by polished and satin finishes. The 60-minute counter at 6 o’clock picks up the rounded octagonal shape of the bezel. The patented fold-over clasp is secured by four independent catches.
Technical Specifications
Brand | Patek Philippe |
Model | Aquanaut |
Case Dimensions | 42.2mm x 11.9mm |
Case Material | 18K White gold |
Dial | Khaki green, embossed with Aquanaut pattern, gold applied numerals with luminescent coating / Blue, black-gradient, embossed with Aquanaut pattern, gold applied numerals with luminescent coating. |
Lume | No |
Water Resistance | 120 meters |
Strap / Bracelet | Composite material, midnight blue or khaki green , Aquanaut fold-over clasp. |
Movement Basics
Caliber | CH 28‑520 |
Functions | Hours, minutes, central seconds, date, and chronograph |
Caliber Dimensions | |
Power Reserve | 45 to 50 hours |
Winding | Self-winding |
VPH | 28,800 |
Pricing
Price | EUR 60,200 |
Limited Edition | No |