In 2025, Tudor launched the Black Bay Chrono 39 M79310N-0001, a striking stainless steel chronograph with a diameter of 39 mm. The case, which combines polished and satin finishes, features a thickness of 13.1 mm and a lug-to-lug distance of 47 mm. A tachymetric scale is incorporated into the fixed stainless steel bezel, complemented by a black anodized aluminum insert. Protection from water is assured up to 200 meters, and the robust design includes a screw-down crown and chronograph pushers, topped with a domed sapphire crystal.

The dial catches the eye with its yellow backdrop adorned with black sub-dials, a date window positioned at 6 o'clock, and a central seconds hand for the chronograph function. The chronograph also showcases a 45-minute counter at 3 o'clock and small seconds at 9 o'clock. For enhanced visibility in dim conditions, the Tudor's signature Snowflake hour and minute hands are treated with Grade A Swiss Super-LumiNova.

Powering the timepiece is the Manufacture Caliber MT5813, a self-winding mechanical chronograph movement featuring an efficient bidirectional rotor system. This caliber is equipped with advanced mechanisms such as a column wheel, vertical clutch, and a non-magnetic silicon balance spring, operating at a frequency of 28,800 vibrations per hour. It boasts 41 jewels and maintains a power reserve of around 70 hours, with COSC certification ensuring precision. The watch is completed by a stainless steel bracelet that exhibits a blend of polished and satin finishes, featuring Tudor's T-fit clasp for effortless adjustments without tools, accommodating an 8 mm range.