Citizen Promaster Aqualand I Luminous 50mm watch.

The SSGIP case of this watch is made of steel with a gray IP finish. It measures 50mm with a screw-down case back and crown, a unidirectional rotating bezel, and a mineral crystal.

Luminous dial. The indexes and hands allow easy visibility with high luminosity.

Quartz movement, cal. C520, analog-digital with depth sensor.

Depth gauge. With 4 dive logs: date, time, maximum depth, and dive time.

Maximum depth reached from 1 to 80 meters in 10 cm increments.

Immersion duration.

Dive start time in hours and minutes.

Dive end time in hours and minutes.

All data is stored and can be retrieved from the last 4 dives.

Dive alarm: depth alarm, dive duration alarm, rapid ascent alarm, and abnormal depth alarm.

Low battery warning.

Diving bell control function.

Calendar.

Rubber strap with additional extender to wear over the neoprene.

Chronograph to 1/100 of a second, up to 100 minutes.

It is submersible 200m (20ATM)