The OF series is sold in the European market, mainly in Italy. The watch is equipped with Eco-Drive, which requires no battery replacement, is water resistant to 5 atmospheres, and has luminous hands. 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 by light. Product Details: Photo-powered Eco-Drive, accuracy ±15 seconds/month, spherical crystal glass, water resistant to 10 atmospheres. Description: A model with substantial functions and excellent cost performance.