Citizen Men's Eco-Drive ProMaster Diver Blue Watch BN0151-09L The beautiful BN0151-09L watch features a stainless steel 42mm case, with a uni-directional rotating bezel, and a dark blue dial covered by a scratch resistant mineral crystal. The stylish wristwatch is equipped with an exclusive 20mm polyurethane which combines comfort and sturdiness. This horological trendy device has date, hour, minute, second functions. At the heart of this timepiece is Caliber Eco-Drive E168. The Eco-Drive movement keeps the hands revolving smoothly and accurately for precise, reliable timekeeping. It picks up all the advantages of this high-performance ‘engine’. The Eco-Drive (Solar) movement powered primarily by light. Eco-Drive technology has won acclaim in Japan and other countries for its contribution to environmental protection. This watch does not require any battery replacement, charging or winding to maintain constant operation. This magnificent watch has a water resistance of up to 660 feet/200 meters, suitable for short periods of recreational swimming. This elegant masterpiece is sure to complete any man's collection.