The Citizen Promaster Sky Chronograph CB5001-57E is a great choice for modern adventurers and pilots. You can wear it when traveling around the world, going on outdoor adventures, or just in your daily life. It uses Eco-Drive technology which can convert light into energy. The watch has a world time function and radio - controlled accuracy. It's made of durable stainless steel, but we don't have specific information about its size and weight. It's easy to use and can keep accurate time wherever you are.