The aquanaut collection was launched in 1997 with a 38mm case (ref 5060) and was later followed by a larger version 41.5mm case (ref 5065) in 1998. a ladies size was also released previously with a 31mm case.
The Patek Philippe 5167, a member of the Aquanaut collection, is water resistant up to 120 meters, with an embossed black or brown bezel and a sapphire crystal case back. This model has a self winding movement and a 45 hours power reserve.
Different versions of the Patek Philippe 5167 are available, and can be seen in the photographs below
The Patek Philippe Aquanaut all steel
The Patek Philippe 5167 steel case with Patek black rubber strap
The Patek Philippe 5167 Red gold case with Patek brown rubber strap.