The Patek Philippe Aquanaut Travel Time is reference 5164, a dual-time luxury sports watch, and "fake" versions range from low-cost quartz copies to near-1:1 replicas. The genuine watch uses caliber 324 S C FUS, a 40.8 mm case, and a patented Travel Time system with pushers at 8 and 10 o'clock. Checking the dial layout, case finishing, and pusher action is the fastest way to separate a real 5164 from a fake.
What Is the Patek Philippe Aquanaut Travel Time?
The Aquanaut Travel Time launched in 2011 as reference 5164A in stainless steel, followed by the 5164R in rose gold. It measures 40.8 mm across and 10.2 mm thick, with 120 m water resistance and an embossed black dial. The watch displays local time, a second time zone, a date subdial, and day/night indicators for each zone.
Unlike a GMT with a 24-hour bezel, the Travel Time uses two pushers on the left case band to move the local hour hand forward or backward in one-hour jumps. The home time hand keeps running, so travelers can change zones without stopping the movement.
How Does the Genuine Travel Time Movement Work?
The caliber 324 S C FUS is a self-winding movement with a patented mechanism for the second time zone. Patek Philippe's design links the date to local time and uses two apertures to show day and night for both zones. The pushers at 8 and 10 o'clock feel crisp and return immediately, a detail many fakes get wrong.
What Are the Most Common Flaws in Fake Aquanaut Travel Time Watches?
- Pushers that are stiff, oversized, or placed slightly off from the 8 and 10 o'clock positions.
- Date subdial fonts that are too thick, too thin, or misaligned with the printed markers.
- Dial texture that looks flat instead of the embossed, three-dimensional Aquanaut pattern.
- Case finishing with sharp edges, uneven brushing, or a bezel that lacks the correct satin sheen.
- Day/night apertures that are painted or printed rather than actual openings with rotating discs.
- Movement decoration that is stamped rather than hand-finished, or a rotor that spins too freely.
How Do You Check a Replica Aquanaut Travel Time Before Buying?
- Set the local time with the pushers. The hour hand should jump in one-hour steps while the minute hand and home time keep running.
- Inspect the date change. On the real 5164, the date advances with local time, not home time.
- Look at the day/night windows. They should switch gradually over 24 hours, not snap instantly at noon or midnight.
- Compare the case profile. Genuine 5164 cases are 40.8 mm wide and 10.2 mm thick, with lugs that curve to fit the wrist.
- Check the strap. The genuine rubber strap has a specific texture and a double-fold clasp with the Patek cross.
Are 1:1 Replicas of the Aquanaut Travel Time Accurate?
High-grade replicas can match the 5164's case size, dial color, and basic dual-time function, but the movement remains the biggest gap. Most fakes use a modified Asian GMT or clone movement that lacks the patented Patek mechanism and the same finishing. Buyers who want a convincing look should focus on dial texture, pusher placement, and date alignment rather than the movement alone.
FAQ
What reference number is the Aquanaut Travel Time?
The main references are 5164A-001 in stainless steel and 5164R-001 in rose gold. Both share the 40.8 mm case and caliber 324 S C FUS.
Does the fake Aquanaut Travel Time have a real second time zone?
Some replicas offer a working GMT hand, but few can jump the local hour independently like the genuine Travel Time. Many just use a fixed 24-hour hand.
How can I tell a fake Patek Philippe by the case back?
Genuine 5164 case backs have crisp engravings, correct reference numbers, and a sapphire crystal with the Patek cross. Fakes often show shallow laser etching or mismatched reference text.