Take things up a notch with this Citizen Eco-Drive perpetual calendar chronograph. This perpetual calendar is loaded with features including a 1/20 second chronograph that measures up to 60 minutes, 12/24 hour time, dual time, date, alarm, and luminous hands. It is shown in stainless steel with blue dial, resulting in a dramatic yet sporty design. Additional details include a 44mm screw-back case, foldover clasp with hidden double push button and 100 meter water resistance. Citizen Eco-Drive is fueled by light, any light, so it never needs a battery.