This replica aquanaut 5164A0 40.8mm delivers the Travel Time complication in stainless steel, making it the most accessible dual-timezone Aquanaut in the current range. The 5164A-001 measures 40.8mm and features the same chequerboard-textured dial and tropical composite strap that define every Aquanaut, but adds a second hour hand for tracking home time alongside local time. Two slim pushers on the left case side let you adjust local hours forward or back without touching the crown. The steel construction keeps the weight manageable for daily wear while the Travel Time function serves anyone who regularly crosses time zones.

Technical Overview

• Case diameter: 40.8mm
• Case material: stainless steel
• Dial: embossed chequerboard pattern
• Crystal: sapphire with anti-reflective coating
• Strap: black tropical composite rubber
• Movement: automatic Travel Time
• Functions: dual time zone, date, sweep seconds

The pushers at 8 and 10 o’clock actuate with a crisp click, advancing or retreating the local hour hand one step at a time. The date corrects automatically when you cross midnight in either direction, eliminating the need for manual date adjustment after timezone changes.

Inside the Movement

The Travel Time caliber adds a second hour hand and the pusher mechanism to the base automatic movement. Despite the added complication, the case retains the same 40.8mm footprint as the simpler 5167 references. Patek Philippe engineered the Travel Time as a true daily-wear complication rather than a showcase piece, prioritizing ease of use over visual complexity. The 5072R-001 in rose gold takes the Aquanaut in a different direction with its smaller 35.6mm case and dressier proportions. Both belong to the Aquanaut collection, but the 5164A targets travelers while the 5072R leans toward elegant everyday wear.

What Sets It Apart

Among all Aquanaut references, the 5164A-001 offers the best ratio of complication to wearability. The steel case and rubber strap combination is light on the wrist, the Travel Time function is genuinely useful, and the pusher operation requires no tools or special technique. Where the 5167A gives you time and date with nothing more, the 5164A adds exactly one practical layer without overcomplicating the dial or the case silhouette. This replica aquanaut 5164A0 40.8mm strikes that balance between utility and the clean Aquanaut aesthetic.