In Depth · Fears

Fears Arnos Opera Black puts onyx inside the rectangle

Black onyx and white lacquer give the slim Arnos a strict graphic structure. Does the material contrast strengthen its proportions?

Hen & Mills Editorial · 4 min read · 18 October 2026

• The Arnos Opera Black combines a rectangular steel case with black onyx and white lacquer to test how far contrast can carry a dress watch.
• Its 22.6mm-wide curved case encloses a round white centre and long Roman numerals, with two black straps changing the surrounding texture.
• Fears lists the watch at £4,350 including UK VAT and supplies Epsom leather and grosgrain silk straps; its product page accepts orders.

A rectangular watch has no place to hide a bad dial. Its straight edges draw the eye to every alignment, and even a modest change in texture can upset the whole balance. Fears takes the opposite approach with the Arnos Opera Black, using a polished black onyx outer dial and a white lacquer circle at its centre. The editorial question is simple: can an assertive black-and-white composition make a slim dress watch feel deliberate without turning it into an exercise in graphic design?

A circle held inside the rectangle

Fears describes the outer surface as black onyx, polished to give the dark area a reflective depth. The central circle is white lacquer, so the change is in material and light as much as colour. Roman numerals extend across the black area towards the case's edges. That arrangement lets the rectangular outline organise the dial while the round centre provides a calmer place for the hands. In the brand's photographs it reads as a single composition, rather than a conventional round watch squeezed into an oblong frame.

Look more closely at the hands. Fears uses its pipette shape, with bevelled, polished surfaces and black-gold plating. The metal can catch light against both the white centre and the darker outer field, which is important when a dial has such a sharp tonal split. The company says the dial is made in Germany and the hands are cut from brass. Those details are less interesting as badges of origin than as explanations of how the design is put together: two different dial finishes, a set of applied-looking numerals and hands that need to remain visible against both grounds.

The official page places this version beside the Arnos Pewter Blue in the current collection. That makes Opera Black a useful way to judge how much of the Arnos's character belongs to its case rather than to one colour scheme. Where a coloured dial can carry some of the personality by itself, black onyx and white lacquer expose the proportions more directly. I think the contrast works because it gives the centre a clear role, leaving the numerals to stretch into the corners. It is a more formal answer to the same rectangular brief, not a claim that one finish makes the other obsolete.

Slimness with a curve

The case is 316L stainless steel, 22.6mm wide and 33.5mm long excluding its lugs; Fears gives 40mm from lug to lug, an 8.40mm thickness and a 20mm lug width. A rectangular case can look longer than those numbers suggest, so the 40mm end-to-end measurement is the one to keep in mind when judging its footprint. The front crystal, case and closed back share a curved profile. Fears says this follows the wrist's shape, although comfort is something a product page cannot verify for every wearer.

The finishing mixes linear brushing with polished surfaces. A sapphire front crystal carries anti-reflective coating on both sides, and water resistance is 30m. That modest rating suits the dress-watch brief, although it is no basis for calling the watch a swimming companion. The winding crown has a gently rounded shape and the brand's cypher. Those restrained physical details matter here because the dial already supplies all the contrast the watch needs; adding a bulky crown or a heavily decorated case would crowd the edges of an otherwise tidy object.

Inside is a top-grade Sellita SW1000-1b, automatic and configured by Fears for hours and minutes. The published figures are 18 jewels, 28,800 vibrations per hour and a 46-hour power reserve. Fears decorates the rotor in blue with its Bristol flower motif, but the closed caseback keeps that detail out of sight during ownership. That is a sensible trade for this particular watch: the back can keep the case visually quiet, while the movement's small size allows the rectangular exterior to stay thin. The specification is clear; accuracy beyond it is not claimed.

Two ways to wear the same dial

Fears supplies two black straps. One is Epsom leather with a textured surface for everyday use; the other is grosgrain silk, whose fine ribbing makes the watch feel more dressed. Both have blue Alcantara lining, a private flash of colour that only appears when the watch comes off the wrist. The 20mm lug spacing also leaves room for other compatible straps. In photographs, the change from leather to silk does not alter the dial's black-and-white argument, but it does change the texture immediately beside the steel case.

The strongest part of the Opera Black is its refusal to soften that argument. Onyx, lacquer, Roman numerals and a rectangular case could easily have become a catalogue of old-fashioned dress-watch cues. Here the broad white centre and long numerals give them a graphic order. I would still want to see the polished onyx in daylight before deciding how calm the dial really is; reflections can change a black surface considerably. What Fears' own material establishes is a coherent layout, precise dimensions and two thoughtful strap choices, enough to make the question worth asking without pretending to have worn it.

Fears Arnos Opera Black pricing and availability

Fears lists the Arnos Opera Black on its current product page with an add-to-cart option. Its UK list price is £4,350 including UK VAT, or £3,625 before VAT. For Australian buyers the site lists about A$7,150 before taxes, a converted figure that can move. Fears does not state a production limit or a dated announcement on this page, so neither is assumed here.