Tudor Black Bay One 39mm S&G Steel Black Diamond Dial M79663-0006 - BRAND NEW

The Tudor Black Bay One M79663-0006 represents a refined chapter in one of watchmaking's most celebrated modern sport-watch stories. The Black Bay line, which Tudor re-launched to wide critical acclaim in the early 2010s, draws its DNA directly from Tudor's own rich history of professional diving watches dating back to the 1950s and 1960s. The "One" designation within the Black Bay family signals a step up in material luxury, blending the robust sports credentials of the core collection with precious-metal and gemstone appointments that speak to a more discerning buyer.

At 39mm in diameter, the Black Bay One M79663-0006 occupies a sweet spot that flatters a broad range of wrist sizes while honoring the proportions of the vintage references that inspired it. The case is crafted in stainless steel and finished with Tudor's characteristic mix of brushed and polished surfaces, giving the watch its immediately recognizable presence. The 39mm footprint makes it versatile enough for both formal occasions and weekend wear, a dimension that collectors consistently cite as one of the Black Bay family's greatest strengths.

The dial is where M79663-0006 truly distinguishes itself. A deep, lustrous black background is set with diamond hour markers, bringing genuine sparkle and a sense of occasion that plain index versions cannot match. The contrast between the dark dial and the glittering diamonds is dramatic yet tasteful — this is not ostentation for its own sake but rather a deliberate design decision that rewards close inspection. The yellow gold bezel frames this dial beautifully, its warm tone playing against the cooler steel of the case to create the classic two-tone aesthetic that has never gone out of style.

The bracelet continues the steel and yellow gold theme, integrating the two materials in alternating links that echo the bezel treatment and give the watch a cohesive, intentional look from every angle. Tudor's bracelet engineering is known for its comfortable fit and solid, rattle-free construction, ensuring that the M79663-0006 wears as good as it looks. The two-tone execution has historically carried strong collector appeal, ensuring that this reference holds its visual identity across generations of taste.

Powering the Black Bay One M79663-0006 is an automatic movement, consistent with Tudor's commitment to in-house mechanical calibres across the Black Bay range. Tudor movements are built to strict tolerances and are COSC-certified in many Black Bay references, reflecting a brand-wide standard of precision that punches well above the price point relative to competitors. Whether this is a first luxury mechanical watch or the latest addition to a seasoned collection, the movement's reliability and serviceability are important reassurances of long-term ownership value.

Bizak & Co. is pleased to offer this Tudor Black Bay One M79663-0006 brand new, complete with box and papers, at the best price available. Buying from an authorised and reputable dealer like Bizak ensures full manufacturer warranty coverage, authenticity, and the peace of mind that comes with a transparent purchase. If you are looking to buy the Tudor Black Bay One online or simply want expert advice on this reference, our team is ready to assist — reach out today and let us help you secure this exceptional two-tone diamond-dial sport watch.