If you’ve got a secret mission … this is the watch for you. Also for professional underwater explorers: the stainless steel Audemars Piguet Royal Oak Offshore Diver is water resistant to 300 meters and is resistant to extreme pressures, shocks and magnetic phenomena. A diver’s watch in all its pristine simplicity, it is equipped with the 278-part Manufacture Audemars Piguet selfwinding movement: Calibre 3120. Built according to the NIHS Swiss watch industry norms that comply with international diving codes, the Royal Oak Offshore Diver is equipped with a host of features and functions that qualify it to be a dive watch. Among them:
Time preselection device: It features a dive scale on an inner rotating dial ring that is activated via a unidirectional click mechanism linked to the 10:00 crown. In compliance with the 92-11 norm, the device features a minutes scale on which five-minute periods are clearly highlighted.
Visibility: The time, the time measured on the inner dial ring and the movement operating indication must be readable in 
the dark from a distance of 25 cm. The watch meets this requirement thanks to the luminescent coatings.
Water tightness and resistance to salt water: The 92-11 norm demands water tightness to at least 100 metres. The caseback screws, the intermediate bolts and the distinctive Royal Oak Offshore hexagonal screws seal the case as securely as a submarine hatch – to 300 meters.
Antimagnetic property, resistance to shocks and to thermal variations: The movement of the Royal Oak Offshore Diver is protected by an antimagnetic strongbox-type case construction.
Resistance to external forces: The attachments must be able to withstand forces of up to 200 N. The size of the pin buckle has been specifically increased to ensure such resistance.
It retails for $17,000.
See the video below for just how cool this watch works for day time to dive time.