The Aquanaut watch model 5167/1A was introduced in 1997, causing a stir with its youthful and contemporary design. Its rounded octagonal case was inspired by the Nautilus, and it came with a durable "tropical" strap made of a composite material that could withstand wear, saltwater, and UV radiation.

This watch is powered by a self-winding mechanical movement and features a Caliber 26-330 S C, along with a date display and sweep seconds. The dial is black and embossed, while the case is made of stainless steel and has a screw-down crown, a sapphire crystal case back, and a water resistance of up to 120 meters. The case measures 40.8 mm in diameter from 10-4 o'clock and is 8.1 mm in height. The strap is a steel bracelet with an Aquanaut fold-over clasp.

‍