The first Aquanaut to carry a complication beyond a date. It introduced an updated Travel Time mechanism: two pushers on the left of the case move the local hour hand forward or back an hour at a time, over a second central hour hand kept on home time, with day and night indication on the dial.
Reference record
Production
2011–present
Model
Aquanaut Travel Time
Case material
Stainless Steel
Case size
40.8mm
Movement
Automatic
Calibre
Cal. 324 S C FUS
Dial colours
Black
Market value band
$55k – $130k
Timeline
2011Introduced as the first complicated Aquanaut, debuting the updated Travel Time mechanism
2016A rose gold sibling, the 5164R, joins the line
Notable
—The upper pusher advances local time by an hour, the lower one moves it back. Neither affects the home-time hand.
—The time zone can be adjusted at any point in the cycle without risk to the mechanism, a change from Patek Philippe's earlier Travel Time designs.
What the specification implies
—The reference carries two central hour hands, one solid and one skeletonised, which sit on top of one another and read as a single hand when both zones show the same hour.
—The two pushers on the left of the caseband are part of this reference's case design. Time-only Aquanaut references have a plain caseband on that side.
Common questions
When was the Patek Philippe 5164A produced?
The 5164A has been in production since 2011.
What movement does the Patek Philippe 5164A use?
The Patek Philippe 5164A runs the Cal. 324 S C FUS, an automatic movement.
How do I check a Patek Philippe 5164A with Watch Safe?
Look up the watch's serial number in the Watch Safe registry to see whether a record exists or a theft flag is attached. A registry search identifies records for a specific serial; it does not authenticate the watch. Authentication is performed in person by an independent expert authenticator, and Watch Safe records and publishes the result.