CWC 6BB-WR: the size tradeoff behind a military-style automatic chronograph

The black-dial CWC 6BB-WR organises a busy task with a restrained layout. Two registers sit across the centre, Arabic numerals occupy the remaining space, and pale hands link the main time display to the minute track. In the official photographs, the asymmetrical mass around the crown and pushers makes the case look purposeful. The appealing part is the hierarchy: chronograph information is present without turning the dial into a ring of unrelated scales.

The current watch uses a Sellita SW510 BH b automatic chronograph, sapphire and a 100m rating. CWC lists a 42mm case without the crown, 49mm lug-to-lug and 14.9mm thickness. Fixed bars take the supplied 20mm military-grey strap. Those dimensions are central to the buying decision; the historical visual language does not imply a small vintage-sized watch.

The side photograph is particularly useful because the face-on image understates the volume above the strap. A pass-through strap also runs beneath the case, adding material between watch and wrist. This does not establish that it wears badly, but it is a reason to compare height and sleeve clearance before treating a two-register military dial as an automatic everyday fit. No wrist measurements or hands-on comfort assessment are claimed.

The black and white options are listed at £2,250, with Tropical at £2,350. CWC describes the latter as a deliberately aged dial treatment whose results vary, not a dial that has naturally acquired decades of service wear. All three remain within this article. A purchaser should distinguish the appearance of age from the provenance of an issued vintage watch.

A useful alternative inside CWC is the Sea Falcon. That quartz chronograph adds a rotating bezel and a higher stated water-resistance rating at a lower UK price, while displaying three subdials rather than two. Choose the 6BB-WR for its automatic mechanism and more spare pilot-watch composition, not because mechanical chronographs are inherently the more practical timing instrument.

Method and limits: desk research and visual inspection of official CWC photographs, checked 8 November 2026. Prices and availability describe the UK catalogue at that check, excluding any assessment of Belgian delivered cost. Manufacturer specifications have not been independently tested; there was no hands-on access. Source dates identify published source records, not a newly verified watch-release date.