Champion freediver and DeLaCour ambassador Pierre Frolla shows just how to use the new Promess Reef Saver diver’s watch. On a single breath, Frolla can descend to depths of around 80 metres with neither breathing apparatus nor diving weights. Such depths pose no problems for the latest model in the DeLaCour Promess collection, however, since the Reef Saver watch is water resistant to a depth of 500 metres.

DeLaCour Promess Reef Saver

A sturdy PVD titanium case and rubber strap ensure that the watch can withstand such tough conditions without any fears of oxidation, while a unidirectional rotating inner bezel (a standardised feature of any diver’s watch and doubly important to freedivers, for whom every second counts) can be operated by a separate crown at 2 o’clock to measure dive times.

For everyday wear the watch features a magnifying date window at 3 o’clock and clearly legible minute indications around the dial—all of which, together with the bold hands—are luminescent for excellent underwater visibility.

The 55mm Reef Saver is powered by the DC 261 self-winding movement, which has a power reserve of 42 hours. Two versions are available, one with an 18-carat red-gold bezel and one with a PVD titanium bezel—each is a limited edition of only 88 pieces.

Pierre Frolla dove beyond 100m without breathing apparatus to recover the chequered flag for this year’s Formula 1 Monaco Grand Prix from the sea bed. The flag, which was signed by all the Formula 1 drivers, was subsequently auctioned—along with a DeLaCour Reef Saver watch, in aid of the Peace and Sport charity.