Stainless steel case with a stainless steel mesh bracelet. Fixed stainless steel bezel. Black dial with silver-tone hands and index hour markers. Minute markers. Pilot's rotating slide rule. Dial Type: Analog-digital. Luminescent hands and markers. Two sub-dials displaying: 24 hour digital UTC time display. Eco drive quartz movement. Scratch resistant mineral crystal. Screw down crown. Solid case back. Case diameter: 48 mm. Case thickness: 15.5 mm. Round case shape. Band width: 23 mm. Band length: 8 inches. Deployment clasp with push button release. Water resistant at 200 meters / 660 feet. Functions: atomic, perpetual calendar, date, day, GMT, second time zone, chronograph, hour, minute, second. Additional Info: with atomic clock synchronization for superior accuracy, this perpetual calendar chronograph receiving radio sigsuitable for recreational scuba diving. Casual watch style. Item Variations: JY8030 83E, JY8030.83E, JY803083E. Citizen Navihawk UTC Eco-Drive Chronograph Black Dial Stainless Steel Mesh Mens Watch JY8030-83E. CASE CASE SIZE 48 mm CASE THICKNESS 15.5 mm CASE MATERIAL Stainless Steel CASE SHAPE Round CASE BACK Solid DIAL DIAL TYPE Analog-Digital DIAL COLOR Black CRYSTAL Scratch Resistant Mineral HANDS Silver-tone SECOND MARKERS Minute Markers. Pilot's rotating slide rule DIAL MARKERS Index SUB DIALS Two - 24 Hour Digital UTC time display LUMINISCENCE Hands and Markers BEZEL Fixed Stainless Steel CROWN Screw Down BAND BAND TYPE Bracelet BAND MATERIAL Stainless Steel Mesh BAND COLOR(S) Silver Tone BAND LENGTH 8 inches BAND WIDTH 23 mm CLASP Deployment with Push Button Release FEATURES WATER RESISTANCE 200 meters / 660 feet CALENDAR Perpetual Calendar FUNCTIONS Atomic, Perpetual calendar, Alarm, Date, Day, GMT, Second Time Zone, World Time, Chronograph, Hour, Minute, Second, Power Reserve Indicator FEATURES Alarm, Atomic Timekeeping, Calendar, Chronograph, GMT, Perpetual, Power Reserve Indicator, Solar, Stainless Steel, Time Zone, World Time