Panerai Luminor Perpetual Calendar GMT Platinumtech PAM01575 Watch Review
The Panerai Luminor Perpetual Calendar GMT Platinumtech PAM01575 subscribes to the brand’s familiar design language, beloved by the Paneristi. However, on this occasion, the customary sandwich dial is supplanted by an expanse of blue sapphire crystal, proffering tantalising glimpses of the day and date discs positioned beneath. Some functions are shown front of house, while other indications are located to the rear, optimising available space to deliver excellent readability. Mark McArthur-Christie, Panerai owner and petrolhead, reviews the PAM01575 while making the occasional reference to Italian sports cars and fire-breathing engines of yesteryear.
Panerai Luminor Perpetual Calendar GMT Platinumtech – introduction
Even if you know next to nothing about watches, you’re not going to mistake a Panerai for anything else. It doesn’t matter whether it’s a Radiomir, a Luminor or a Submersible, it’ll be visible from space (thanks to a combination of size and dial design) and the solid stainless case will feel as though Sly Stallone hand-milled it from leftover Littorio class battleship armour. Subtle they ain’t, but that’s part of their military maritime heritage and so part of the appeal.
This clarity of identity can make it difficult to produce something different. But if you’re going to, it’s worth doing properly. So here’s a Panerai, crafted in precious metal with a gold micro rotor, two mainspring barrels, a sapphire crystal dial and a perpetual calendar. Despite that, you’ll still be able to see it from space and, if anything, it feels even more as though it was hewn from High Hardness armour steel (HHA).
Welcome to the Luminor Perpetual Calendar GMT Platinumtech or the PAM01575 to its friends – a Panerai with more cool complications than Captain Scarlett’s submarine.
Panerai Luminor – luminescent dials
Aficionados will already know there are (give or take a Submersible) two sorts of Panerai; the Luminor and the Radiomir. At least, that’s the case nowadays. Back in the mid-late twentieth century, Luminor and Radiomir referred to dial illumination technology rather than a model of watch.
Radiomir was a radium-based compound, named after the element (the ‘radio’ element) with the ‘mire’ part referring to a sight – as in a gun sight. That’s because the first use for Radiomir was to make ‘small arms, machine guns, ordnance and torpedo tubes’ (to quote the patent) usable in the dark. It made its way to watches, but by the 1940s, it had become obvious that radium was not good news. Anything that kicks out enough gamma radiation to completely warp the early riveted plastic dials on the ref. 3646 watches isn’t going to ensure a long and healthy old age for the people creating them.
Panerai’s Luminor compound, while still radioactive, used tritium. This didn’t emit the nasty gamma radiation of Radiomir and its half life is a mere 12, rather than 1,600 years. A far more benign way to make the time visible in the dark. Nowadays, because we’re all softies who don’t want to resemble the Ready-Brek kid, low-light legibility is taken care of by photoluminescent Super-LumiNova.
Panerai Luminor Perpetual Calendar GMT Platinumtech – design elements
All the classic Luminor elements are here with the PAM01575 – the heavy, squared 44 mm case with its integral lever crown guard, the 12-sided caseback, heavy lugs and a new take on the sandwich dial. But there’s plenty that’s new, too. Panerai’s COO Jérôme Cavadini takes up the story:
The timepiece incorporates the recognizable design elements of the Maison’s most emblematic collection with the watchmaking complexity of the perpetual calendar and preciousness of Panerai Platinumtech. With a sapphire dial that reveals the calibre intricacies and functions, the new Luminor provides wearers with a deeper connection to the art of timekeeping.”
In other words, you’re getting a De Tomaso Mangusta, not with the 4.7-litre iron-block V8 but an 829bhp Tipo F140 V12 under the bonnet. That’s a tough combination to resist.
Panerai Luminor Perpetual Calendar GMT Platinumtech – case
Looking at the bodywork – sorry ‘case’ – Panerai has deployed the ultimate stealth material; platinum. Unless you’re lucky enough to heft it, you’d have little idea that the PAM01575’s case isn’t good old stainless steel. Pick it up and you’ll soon notice the weight though – it’s 33% heavier than 18ct gold.
Like gold, pure platinum is too prone to picking up scratches and scuffs to make it practical material for watch cases, so it’s used in an alloy form. Here, Panerai call their case metal ‘Platinumtech’ and they’re keeping the composition close to their corporate chests, but the firm says its alloy is 40% harder than ‘…standard platinum due to a distinctive treatment process’. No matter, you get a case you can wear without worrying overly about scratches.
As you might expect from Panerai, you’ll also be able to wear your PAM01575 without worrying about getting it wet. The 44 mm case is water-resistant to 50 m (although it’s tested to 25% more pressure, just to be sure), so fine for any real-world application, including a serious bit of holiday diving, tanks and all.
Panerai Luminor Perpetual Calendar GMT Platinumtech – dial
Discussing the dial throws up all sorts of problems. For a start, which one? The ‘dial’ in the traditional sense is transparent blue sapphire with Super-LumiNova applied indexes and hands. Behind it run – very visibly – the day and date discs. This must have been a tough task to pull off – too much transparency and the firm would have compromised basic time-telling. On the other hand, too little and they’d lose the visual interest of the background discs. As it stands, the balance of white lettering and the blue sapphire dial works well.
Panerai Luminor Perpetual Calendar GMT Platinumtech – caseback
Practically, there’s all the usual everyday information of hours, minutes and running seconds, but there’s also a rather un-Panerai day-date along with an AM/PM indicator and a GMT hand. Then there’s the other dial. That’s the one you can see through the sapphire (clear this time) caseback. Remember this is a perpetual calendar – so you need to know the month, the year and whether it’s a leap year or not.
It’s all on the reverse of the movement, along with a power reserve indicator to keep track of the 3 days of energy stored within the two mainspring barrels. Everything is labelled neatly in gold-infil lettering with black backgrounds to mark out the reserve and the calendar.
The year, displayed in full, is particularly neat. It uses a separate disc carrying the millennium and century with two outer discs for the decades and years, all running on a jewelled centre bearing. As the discs rotate, the movement calculates the date up to 2399 without the need to get at the movement. It’s not quite all self-service though. At the end of each century, you’ll need a word with your watchmaker asking them to disassemble the year movement bridge in order to rotate the century disc by 90°, thus allowing your watch to continue calculating the correct year.
Panerai P.4100 calibre
There’s proper Panerai robustness with the way you adjust the rest of the perpetual calendar. No messing about with styli, you can do everything just by twirling the crown. There’s no risk of doing any damage either – you can adjust things even at month-end or near midnight. The inbuilt (and patented) date shock protection system stabilises the date disc, avoiding the problem experienced with some traditional perpetual calendars where indications can become misaligned after being subjected to a sudden jolt or impact. There’s a neat side-benefit too – this mechanism means there’s less wear, so less need for frequent servicing.
This is a lovely bit of movement design and watchmaking as previously mentioned, all the information you need regularly is on the front of the watch, keeping the dialside clean, simple and fuss-free. The information you don’t need as often is on the back, giving you the excuse to take your watch off and enjoy having a good look at the Panerai P.4100 calibre.
While you’re there, take a look at the micro-rotor. It’s notoriously difficult to get micro-rotors to power complicated movements like the P.4100 calibre simply because they eat energy. A micro-rotor doesn’t have as much inertia as a full-size weight, so making it from a heavy, dense metal like gold helps a lot. It also means the movement can get away with measuring just 7 mm thick despite the number of features it supports. As well as putting the P.4100 calibre on a diet, the off-centre rotor also has the advantage of leaving the back of the movement clear for all its calendar functions.
But that’s not all this movement does – remember the GMT function? The Laboratorio di Idee team has managed to develop a specially designed GMT spring that spreads the pressure it exerts across several points of contact. Less wear and tear again. It also makes the hand move that little bit more smoothly.
Finishing fiends haven’t been left out in the cold either. This isn’t a heavily hand-finished movement, but that wouldn’t be right for a watch with this sort of heritage. Instead there’s classic Panerai brushing on the three-quarter plate, with circular brushing behind the engraved micro rotor. There’s machine turning on the base plate too, along with some machine-precise anglage on the plates. Screws are all polished and lettering is gold-infilled.
Panerai Luminor Perpetual Calendar GMT Platinumtech – two straps
Completing the whole thing is a dial and GMT hand-matching dark blue alligator strap, sporting a handmade vintage finish. There’s a more casual blue rubber strap in the box too, so you’re set for wearing your PAM01575 pretty much anywhere.
Panerai Luminor Perpetual Calendar GMT Platinumtech – closing remarks
This new Luminor is, all in all, a bit of a contradiction – although none the worse for it. It’s fascinating to see that a maker who started out producing solid steel utility kit is now making high-complication, luxury watches like this. The movement packs some impressive perpetual calendar and GMT credentials, although you have to turn it over to look and look at the reverse to see them. Here it is in a platinum case with a properly finished 55 jewel, 429-component movement. At the same time, because it’ll pass for stainless at a casual look, the model retains the brand’s legendary utilitarian feel and appears tastefully understated.
In effect, you’re getting a stealthy top-end Panerai. That’s quite a proposition.
Further reading
Technical specifications
- Model: Panerai Luminor Perpetual Calendar GMT Platinumtech PAM01575
- Case: polished Platinumtech case, diameter 44 mm, water resistance 5 ATM (50m), sapphire crystal to the front, exhibition case-back.
- Functions: hours, minutes, small seconds, perpetual calendar, power-reserve indicator, GMT, seconds reset.
- Movement: P.94100 calibre, self-winding movement, frequency 28,800 vph (4 Hz), 55 jewels, power reserve 3 days.
- Strap: dark blue alligator strap with vintage handmade patina finish, white gold buckle. Also comes with an additional blue rubber strap.
- Price: £54,400 (RRP as of 24.5.2025)