In Depth · Bremont

What does ceramic add to Bremont’s 500-metre diver?

The blue Supermarine combines a ceramic shell with a titanium inner case. Its materials make more sense when considered as a complete diving watch.

Hen & Mills Editorial · 4 min read · 9 October 2026

Ceramic on a dive watch can look like a colour decision. On Bremont's Supermarine Full Ceramic Deep Blue, the case is blue all the way through its visible shell, yet the watch still carries a 500-metre rating, a helium escape valve and a titanium structure inside. The useful question is what ceramic actually contributes to a diver built around that specification. Bremont's exact product page gives us enough to distinguish the outer material from the engineering underneath, without pretending to have taken the watch into the water.

Blue on the outside, titanium within

Bremont describes a 43 mm monobloc blue ceramic outer case with a titanium inner case. The brand characterises ceramic as light and highly resistant to scratching. It lists the watch head at 74 g, a figure that says more about the case than a full wearing weight because the strap is excluded. The case is 13 mm deep and 50 mm long, so the material does not turn this into a small watch. What it offers is a different surface and weight within a substantial diver's footprint.

The unidirectional bezel is knurled titanium with a blue ceramic insert, while the screw-in back is blue PVD titanium. Turn the watch over and there is an engraved map of the world's oceans rather than a movement view. Those choices make the case a combination of materials, not a ceramic object from crown to back. I think that is the more convincing way to use ceramic here: put its coloured, scratch-resistant surface where the eye and sleeve meet the watch, and let titanium perform the less theatrical structural work.

A 500-metre diver still needs a readable face

Bremont rates the assembly to 50 atm, or 500 metres, and specifies a screw-down crown and helium escape valve. The number belongs to the finished watch, not to ceramic in isolation. A domed anti-reflective sapphire crystal protects a black wave-pattern dial, which is a useful visual counterweight to the blue shell. Applied trapezoid markers and the hands contain white Super-LumiNova with blue emission; the date sits at three o'clock. The orange details on the minute track and dial give the largely dark face a small point of contrast.

The wave pattern could have overwhelmed the markers, but Bremont's published photographs show broad, bright shapes against the black surface. The maker also describes a naval-inspired crosshair formed by the indices. That is a design claim rather than a feature a diver needs to read elapsed time, and I would judge the legibility by the size and separation of the hands first. With a 43 mm case and a wide bezel, the dial has room to carry its texture without forcing tiny hands into the remaining space.

The movement and the strap make the argument practical

Inside is Bremont's BB64AH automatic calibre, specified with 25 jewels, a 4 Hz beat rate and a 56-hour power reserve. The watch displays central hours, minutes and seconds plus a date. Those are straightforward functions, which suits a case already making a strong material statement. The closed back hides the movement, so the buyer's decision has to rest on the exterior, the specifications and the practical value of the titanium-and-ceramic construction rather than on a view of mechanical decoration.

Despite the product name's reference to leather, Bremont describes this configuration as a blue embossed rubber strap with leather lining and a quick-release system. That distinction matters: the side seen from outside is rubber, while leather sits against the wrist. The 22 mm lug width leaves room for another strap if the owner wants a different balance. Bremont also lists rubber and NATO configurations of the Deep Blue on separate product pages; this article concerns the leather-lined strap version, rather than treating every configuration as the same purchase.

Ceramic does not create the depth rating by itself, and the blue finish will be a more immediate reason to choose this watch than its helium valve. That is fair enough. The material still has a coherent job here, providing a coloured, scratch-resistant shell around a titanium inner case, while the familiar diver's equipment remains in place. I would not call it a discreet watch, at 50 mm from end to end, but it makes a clear case for ceramic as part of a working design rather than an applied blue effect.

Bremont Supermarine Full Ceramic Deep Blue pricing and availability

Bremont lists this 250-piece limited edition as in stock on its Australian, UK and US storefronts. The regular list prices for the leather-lined strap configuration are A$11,250, £6,450 and US$7,400 respectively. The Australian page offers an Add to bag option, while Bremont's delivery text describes international delivery in seven to ten working days. These are current storefront terms, not a promised delivery date for any particular order.