This watch is powered by Citizen’s impressive Eco-Drive technology, meaning it is fuelled by light and never needs a battery. With a stainless steel mesh strap, multi-functional dial and water resistance of 100 metres. A simple, yet revolutionary concept: a watch that never needs a battery. Citizen Eco-Drive technology harnesses the power of light from any natural or artificial light source and converts it into energy which is stored in a permanently rechargeable lithium-ion cell. It recharges continuously in any kind of light to run forever. Watch features:Analogue display. Blue dial. Case width 47mm. Stainless steel case. Silver coloured stainless steel strap. 22mm lug width. Solar power. Eco-Drive movement. Swim proof (31m-199m). Rotating bezel. Chronograph watch. Date display. Alarm. Stopwatch feature. General information:Packaging: Yes. Model number: BL5401-50L. Manufacturer’s 5 year guarantee. EAN: 4974374273987.