The Patek Philippe Calatrava 8-Day 5328G-001 pairs an eight-day minimum power reserve with instantaneous day and date displays in a 41 mm white-gold case. Introduced in 2025, it is a manually wound Calatrava with a textured blue dial, a black-gradient rim and a new movement, caliber 31-505 8J PS IRM CI J. Patek Philippe’s current product page lists the reserve as 192 hours minimum: the ninth day is additional reserve, not a promise of nine full days at rated precision.
What is the Calatrava 8-Day 5328G-001?
The 5328G-001 is a 2025 addition to Patek Philippe’s Calatrava collection, listed under Complications. Its main distinction is a long-running manually wound movement paired with day, date and power-reserve displays. The round white-gold case and hobnail guilloché caseband retain familiar Calatrava design cues, while the large case and richly detailed blue dial give the watch a more contemporary presence.
Patek Philippe describes the model as having “instantaneous day-date displays jumping at midnight.” The day appears in an aperture, the date is shown by a hand, and small seconds shares the subdial at 6 o’clock. The power-reserve indicator is at 12 o’clock.
How does the eight-day power reserve work?
The movement is Patek Philippe’s manually wound caliber 31-505 8J PS IRM CI J. The manufacturer specifies a minimum reserve of 192 hours, equivalent to eight days. Its 2025 press release explains that two barrels connected in series provide eight full days of operation, with a ninth day “in reserve.” That wording distinguishes the rated eight-day span from the extra reserve; it should not be read as a guarantee of nine full days at the same precision.
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The reserve display lets the wearer see how much running time remains before winding is due. In practical terms, the watch is intended to run for at least eight days after winding, rather than needing daily winding. The manufacturer does not describe the ninth reserve day as an additional full day of guaranteed accuracy.
What are the case and dial like?
The white-gold case measures 41 mm across and 10.52 mm thick. Its caseband carries hobnail guilloché, a traditional Calatrava detail. A sapphire crystal caseback reveals the movement. Water resistance is rated at 30 metres; that figure does not establish suitability for swimming.
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The dial has a textured blue surface that darkens to a black-gradient rim. Applied white-gold numerals have white luminous coating, and the white-gold hands are shaped like syringes. Day and date indications, small seconds and the reserve display make the layout more information-rich than a simple time-only dress watch. Whether that arrangement feels legible or busy is a matter of personal preference.
5328G-001 specifications
| Specification | Detail |
|---|---|
| Reference | 5328G-001 |
| Collection | Complications; Calatrava |
| Case | White gold; 41 mm diameter; 10.52 mm thick |
| Case details | Hobnail guilloché caseband; sapphire crystal caseback |
| Water resistance | 30 m |
| Dial and hands | Textured blue dial with black-gradient rim; applied white-gold luminous numerals; white-gold syringe-shaped hands |
| Movement | Manual-winding caliber 31-505 8J PS IRM CI J |
| Power reserve | Minimum 192 hours (eight days) |
| Movement dimensions | 32 mm diameter; 5.05 mm thick |
| Parts and jewels | 256 parts; 28 jewels |
| Frequency | 28,800 semi-oscillations per hour (4 Hz) |
| Escapement and balance spring | Pulsomax® escapement in Silinvar®; Spiromax® balance spring |
| Functions | Hours, minutes, small seconds, instantaneous day, instantaneous date, power-reserve indication |
Specifications are from Patek Philippe’s 5328G-001 product page; they are manufacturer-listed figures, not independent test results.
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Straps, clasp and everyday considerations
Patek Philippe lists a navy calfskin strap with a fabric pattern and cream stitching, plus an additional grained taupe calfskin strap. The watch is supplied with a patented triple-blade fold-over clasp in white gold. The product specification does not establish compatibility with generic replacement straps, so owners should verify fit rather than assume an off-the-shelf strap will work with the clasp.
At 41 mm, the case is substantial for a Calatrava, and its 10.52 mm thickness is a useful dimension to consider when judging fit beneath a cuff. The 30 m water-resistance rating is a modest splash-resistance specification, not a swimming recommendation. Buyers choosing it as a daily watch should weigh those practical details alongside its long reserve and calendar functions.
Rank #4
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- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
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Price and availability
At the time of checking on October 4, 2026, Patek Philippe’s English product page displayed $78,020, while its French regional page displayed €73,500. These are separate market-specific prices, not a currency conversion or global price. Patek Philippe’s local product page is the best place to check current regional pricing and availability.
For context, launch coverage in 2025 reported CHF 60,000 and US$70,700. Those are historical launch-era figures rather than current universal prices. Patek Philippe’s 2025 introduction and the eight-days-plus-reserve explanation are in its Watches and Wonders 2025 press release.
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- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Who is the 5328G-001 for?
The 5328G-001 is aimed at someone who wants a traditional precious-metal Calatrava but values extended running time and practical calendar information over a spare, time-only dial. Its manual winding remains part of ownership, but the eight-day minimum reserve makes winding far less frequent than on a typical daily-wound mechanical watch.
The blue textured dial and vertical grouping of indications distinguish it from simpler Calatrava designs. Fratello notes family resemblances to the 5326G and 5226G, while Hodinkee’s 2025 introduction also points to similarities in case and dial cues. The defining trade-off is therefore not just reserve versus winding frequency: it is whether the wearer wants the 41 mm scale and multi-display dial in a dress-oriented white-gold watch.
Quick Recap
Sources
- Patek Philippe: Calatrava 8-Day 5328G-001 product page
- Patek Philippe: Watches and Wonders 2025 press release
- Fratello: introduction and design context
- Time+Tide: launch coverage and reserve-day discussion
- Monochrome: launch specifications and historical price
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
