In the mid-20th century, the invention of the regulator revolutionized diving by balancing the pressure between the diver’s lungs and their compressed air reserves. This breakthrough fostered the development of diving as a sport and led to the creation of specialized instruments.
In 1961, Vulcain introduced one of the first diving watches equipped with a movement featuring an alarm that was audible underwater. This was the Nautical model, fitted with the famous Cricket movement.
This Vulcain Nautical with a striking green dial in tribute to Posidonia, a seagrass found only in the Mediterranean Sea.
The movement can be admired through the transparent caseback. The watch includes hour, minute, second functions, along with an alarm and a decompression scale, which is adjusted via the crown at 4 o’clock. A pusher at 2 o’clock allows for setting the alarm.
To ensure the diver could hear the alarm signaling it was time to ascend, Vulcain developed a triple caseback, which acted as a resonance chamber.
In the dark…
Finally, the CT7 is presented with a rubber strap and a triple caseback delivered separately that acts as a resonance chamber, which can be swapped depending on the watch’s intended use.
