Citizen Promaster

Case diameter: 52mm including
depth sensor
Case height: 15 mm
Case length: 47.5mm
Lug width: 24 mm
Movement: Citizen quartz with
depth sensor and dive time functions
Case material: Stainless steel
Crown: Screw-down
Bezel: Uni-directional, indexed  
w/120 clicks
Water resistance: 200 meters
Vintage: Early 1990s
Originally introduced in 1985,  the
Aqualand was the world's first
professional dive watch with a
accurate, reliable electronic depth
sensor. This watch remains in the
current Citizen catalog still today,
unchanged from its original format
and still looking fresh in design. With
its large case, digital-analog display
and integrated depth sensor, it says
"Pro Diver" like few other watches.