The "OF (Olefelic" happy time) series is sold in the European market, mainly in Italy. The OF series is sold in the European market, mainly in Italy, and is a highly cost-effective model with a basic casual design. The beautiful dial is also solar-powered. The watch is equipped with Eco-Drive, which converts a small amount of sunlight or light into electricity. The watch is equipped with Citizen's unique technology that keeps the watch running on light. Product Details: Photo-powered Eco-Drive, accuracy ±15 seconds/month, spherical crystal glass, water resistant to 5 atmospheres. Description: A simple and beautiful design is pursued with the metal dial.