CA4640-50X
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| Gender | Man |
| Movement | Quartz Eco Drive |
| Case | Steel |
| Bracelet | Steel |
| Clock face | Analog |
| Water Resistant | 100 meters |
Citizen men's watch from the OF Racing Chrono collection. The watch movement is Eco Drive quartz (solar powered) with chronograph functions, date display and 24-hour daily indication. The case is made of steel, diameter 41 mm. The bracelet is made of steel. The dial is green. Water resistance is 10 bar / 100 meters. Reference: CA4640-50X
Item shipped with official 5 year warranty and case Citizen

What is Eco Drive technology?
One of Citizen's challenges: to develop a technology that would ensure that the watch would always run, anywhere in the world. In 1976, they invented the first light-powered analog quartz watch that runs using only light as a power source. This technology, now known as Eco-Drive, can generate energy from any light source (artificial light, natural light, and even dim light) to keep the watches running without ever changing the battery.