Citizen Analog Aqualand Diver Depth Meter Promaster Sea AL0050-57E AL0050 Features: Professional Divers Watch. Quartz movement. Date feature at the 3 o'clock hour. Analog depth display from 1 to 55 meters in units of 0.1 meters Maximum Depth Indicator. Depth Measurement. Depth Alarm in 1 Meter Increments. Depth Error Warning. Rapid Ascent Warning Signal. 200M Water Resistance Automatically Switches to Dive Mode Case Screwdown crown and Screw Caseback. Unidirectional rotating elapsed time bezel. Mineral Glass. Stainless steel Case and bracelet. Battery Battery Life About 2 years. Battery Life Indicator. Dimensions Diameter 46 mm with crown Thickness 14 mm.