The Citizen Watches Eco-Drive Moon Phase Watch comes with a moon phase indicator, and rightly so since the watch has been inspired by the ethereal beauty of the moon. What makes these watches different from
the other moon phase watches is the fact that they are powered by the Eco-Drive technology. Â No need to get power from batteries because with the Citizen Watches Eco-Drive Moon Phase Watch, you only need solar power to keep your watch functioning.Â Citizen moon phase eco drive watches feature an indicator for low charge. They have a case with a screw back, and a mineral crystal / sapphire crystal that is both non reflective and scratch resistant.