The Citizen Skyhawk is loaded with technology. The Skyhawk is perfect for day to day use as well as frequent travel. Key features include Time and Calendar in 22 Time Zones (30 cities), an incredible 4 year power reserve, and 3 world time alarms. Multitasking has never been this easy or stylish. 1/100 second chronograph. Black Sub-dials. One touch interchangeable Analog / digital times. Alarm & self-Adjusting Calendar 99 minutes countdown timer. Dual time. Time and calendar in 22 time zones (30 cities). Rotating Side rule bezel. Luminous hand and hour markers. Time reset advisory. Power saver function. 4 Year Power Reserve. Charges in sunlight or indoors. No battery ever needed. Low charge indicator window. Deployment Buckle. Screw back case. 100 meter water resistant.