The Black Bay without the dive bezel. Blue, 39mm, 12mm.

Take the Black Bay 58, remove the dive bezel and the 200 metres, and you get this: the same snowflake hands and luminous markers on a case that sits flatter and slides under a cuff, with a five-link bracelet that reads as a dress bracelet. Tudor renamed the line Black Bay One in 2025 but the reference and the watch are unchanged. The MT5602 is the same in-house COSC calibre as the 41mm Black Bay diver, with about 70 hours of reserve.

At 100 metres it is a swim watch, not a dive watch; that is the trade for 12mm.

The listing carries the reference M79660-0002 in the title and model row and calls it a 39mm automatic chronometer with 100 metres, a sapphire crystal, a steel bracelet and a blue dial. The photograph shows the smooth bezel, blue dial, snowflake hands and the five-link bracelet. The thickness, lug width, calibre, COSC certification, reserve and clasp are Tudor’s published figures for the reference, which Tudor now lists as the Black Bay One 39.

The seller is Watchsavings, a marketplace seller. Ask the seller whether it is new with Tudor’s five-year guarantee card, and for the box; the rows we read do not say. Nothing here was measured on the watch.

This is a regular Amazon listing from a marketplace seller with Amazon’s 30-day return window; it is not a Luxury Stores pre-owned unit and the seller has not published a condition. The second button opens the live search for Black Bay 39s in case this one has sold.

Black Bay One 39s have resold for under new and close to what pre-owned buyers paid, sometimes more, sometimes less; that is a pattern, not a promise, and nothing here is investment advice.