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Breitling Transocean Unitime Chronograph Ref. AB0510U0/A732


Pre-owned Breitling 46mm Transocean Unitime Chronograph, Mesh Steel Bracelet, Ref. AB0510U0/A732

The Breitling Transocean Unitime Chronograph is a large watch filled with features.  Powered by the Breitling Caliber B05, the Self-winding Automatic Chronometer Movement is COSC certified and includes a 70 hour power reserve.  While the Unitime features a chronograph and date, it is the 24 hour disc-based world time feature that is the focus of the dial. A GMT world time function is operated with the crown that turns the outer ring on the dial that identifies cities around the globe.  The center globe identifies this as a world travelers watch without overpowering the dial.  The rotating disc includes an AM/PM indicator as well as the 24 World City Time Zones.  As a traveller’s watch, it includes 100 Meters / 330 Feet of water-resistance.  This watch comes complete with its original box and papers.


Only 1 left in stock

Categories: , , SKU: 210000005381

Additional information

Band Material

Stainless Steel

Box and Papers

Box and Papers

Band Type






Case Material

Stainless Steel

Case Size





Date, Chronograph, GMT/World Time

Crystal Material


Dial Color

Silver, Polar White




43mm +


1-Year Watchworks Guarantee

Item ID0005381
Model #AB0510U0/A732
Model NameTransocean Unitime Chronograph
Serial Number422XXXX


The modern chronograph watch would not function as it does today without Breitling’s influence. Léon Breitling founded the company in 1884 already manufacturing innovative chronographs.  After his death in 1914, his son Gaston took control and produced one of the world’s first wrist chronographs with a separate pusher.  Gaston’s son Willy introduced the two-pusher chronograph and the iconic Chronomat in 1942, which added a slide rule with a chronograph.  In 1952 they produced the Navitimer with a built-in slide rule that became the official pilot’s watch for the AOPA pilot union. Astronaut Scott Carpenter found his Navitimer so useful that he asked Breitling to modify the watch to use a 24-hour dial, which he then wore into space in 1962 aboard a Mercury capsule.  To celebrate his 25th anniversary as head of the company, Willy also introduced the SuperOcean diver’s watch with a water-resistance of 200 meters.  Clearly, any admirer of chronographs should become familiar with Breitling.