Of the eight Royal Pop references, the Huit Blanc is the one people photograph. White Bioceramic, a white octagonal bezel, and then the detail that makes it: eight hexagonal bezel screws, each one a different colour, assembled in a random order at the factory. Swatch puts the number of possible combinations in the millions, which means the Huit Blanc on your desk is not quite the same watch as anybody else's.
That is a lovely thing to own and a slightly awkward thing to dress. There is no dial colour to match, no bezel insert to repeat, and eight competing accents that all have a claim on the strap. Below is how to choose, and what to select when you order.
First, the part people get wrong: choose the right version
The Royal Pop has no lugs and no lug width, so the usual question — 20mm or 22mm? — does not apply here. What decides fit instead is the layout of your reference.
The Royal Pop comes in two configurations. Six references are Lépine style, with the crown at 12 o'clock and hours and minutes only. Two are Savonnette style, with the crown at 3 o'clock and a small seconds register at 6.
The Huit Blanc (Ref. SSX03W100N) is a Lépine reference, so on the Royal Pop Huit Blanc strap and case set you want the Crown at 12 version. The case adapter rotates the watch head so the crown ends up sitting naturally on the wrist rather than pointing at your knuckles — a small piece of engineering that only matters until you get it wrong.
The second choice is the case and strap colour, currently white or black. That one is genuinely a matter of what you want the watch to do, and it is worth a minute's thought.
Why the Huit Blanc is harder to pair than the rest of the collection
Every other Royal Pop hands you a colour. Otto Rosso is red and pink. Green Eight is two greens. Ocho Negro is black and white. You repeat one of them on the strap and you are finished.
The Huit Blanc does the opposite. The case, bezel and dial are white, the Petite Tapisserie pattern is stamped rather than coloured, and all the colour on the watch lives in eight screws about the size of a grain of rice — in an order the factory chose at random. Pick a strap that chases one of those screws and you have quietly promoted one colour above the other seven, on a watch whose whole idea is that the eight of them landed where they landed.
So the sensible route is not to add a ninth colour at all. It is to decide whether you want the white to keep going, or the white to be framed.
The two ways to wear it
White — keep the watch monochrome and let the screws be the only colour
This is the default and the one most Huit Blanc owners should buy first. A white case adapter and white FKM strap read as a continuation of the watch rather than an accessory to it. The eye runs from wrist to bezel without a break, and the eight coloured screws become the only chromatic event on the whole piece — which is exactly what the design intends.
It is also the version that photographs the way the watch does in every launch image you have already seen, which matters more than it should for a watch that is bought partly to be looked at.
The practical objection to white rubber is that it shows grime. FKM is the answer to that: it is non-porous, does not yellow, does not take on skin oils the way silicone does, and cleans up under a tap in seconds. A white leather strap on a white watch is a three-month proposition. White FKM is not.
Black — frame the case and make it wearable every day
The other route treats the white case as the subject and the strap as the mount. A black case adapter and black strap put a hard border around the white octagon, and the contrast makes the coloured screws read louder, not quieter — the same reason jewellers show white stones on dark trays.
Choose black if the Huit Blanc is going to be worn to work rather than kept for weekends, if you want the 40mm case to look a shade smaller on the wrist, or if you simply want one Royal Pop that behaves like a normal watch. It is the more conservative of the two and the harder one to get wrong.
If you are buying two
Owners who wear these daily tend to end up with both. The case adapter and the strap both detach in seconds and the system is modular, so a second set is a second watch rather than a spare part — white for the weekend, black for everything else. If you are already thinking that way, the full Royal Pop strap and case range covers all eight references, and further colours are being added.
Owners of the black-and-white reference can see the same logic worked through on the Ocho Negro strap and case set, where the decision runs the other way.
What you are actually fitting
The Royal Pop was designed as a pocket watch. Swatch supplies it with a calfskin lanyard in three lengths and a stand for a desk, and no wrist option at all — which is the single most common complaint about an otherwise brilliantly judged watch.
The Helvetus case adapter is machined around the exact 40mm octagonal Bioceramic head, 8.4mm thick. The watch head pops out of its original chassis, clicks into the case, and the strap clips onto the case. Nothing is drilled, glued or modified, the sapphire caseback stays uncovered so the hand-wound SISTEM51 is still on show, and the whole thing reverses in seconds if you want the pocket watch back.
Two details worth knowing before you order:
- The strap uses quick-release hardware, so once the case is on, changing straps is tool-free. You are not re-fitting the adapter every time you change your mind.
- The buckle is brushed stainless steel. On a white watch with eight coloured screws, brushed hardware is the right call — polished steel adds a ninth reflective element and a gold buckle picks a side.
If you like having the right tools on hand for the rest of your collection, the watch strap tool range covers the usual spring-bar and screw fittings, though you will not need one here.
A short note on the watch itself
The Royal Pop landed in May 2026 and did to Audemars Piguet's design language what the MoonSwatch did to the Speedmaster: octagonal bezel, eight hexagonal screws, Petite Tapisserie dial, Royal Oak hands, all rendered in Bioceramic. The eight references are named for the number eight in eight different languages, a nod to the bezel's eight sides — Huit Blanc being "eight white."
Under the sapphire caseback sits a hand-wound version of the SISTEM51, a first for the calibre, with a 90-hour power reserve. It is rated to 20 metres, which is a reminder rather than a restriction: this is a watch to keep away from swimming pools, and a rubber strap here is about wearing it without thinking, not about diving with it.
Collectors took to the Huit Blanc for the obvious reason. It is the only mainstream watch in recent memory where the factory deliberately shipped every example slightly different, and the aftermarket cannot reproduce that. The strap's job is simply to give it somewhere to live.
Common questions
Will a MoonSwatch or Royal Oak strap fit my Royal Pop? No. The Royal Pop has no lugs, so a conventional strap has nothing to attach to. It needs the case adapter, which is tooled to the Bioceramic head. If you also own a MoonSwatch, that range is separate and cut to 20mm.
Does fitting the case damage the watch? No. It clicks around the original case head using the same coupling principle the lanyard uses, and comes off the same way. Nothing on the watch is altered.
Can I change strap colours later? Yes. The adapter stays on the watch and the strap releases without tools, so one case can run several straps.
I own a Royal Oak as well — is it the same strap? Different part, same workshop. The Audemars Piguet strap range covers the Royal Oak 39 and 41, Offshore 42 and 44 and the Offshore Diver, and the Royal Pop case was developed out of that work.
Getting it on the wrist
Helvetus builds aftermarket straps for the Royal Oak family and has done for years, which is why the Royal Pop case set exists at all — the tolerances and the FKM compound come straight off that programme. Every rubber strap carries a lifetime warranty, shipping is free worldwide with no import costs on your side, returns run for 14 days, and more than 50,000 customers have bought from us.
If your Huit Blanc has been living on a lanyard since May, the strap and case set is the twenty-second-century equivalent of finally taking it out of the box.
Helvetus is not affiliated with, endorsed by or sponsored by Audemars Piguet or Swatch AG. All trademarks are used for descriptive and compatibility purposes only. The watch is not included.
