This Citizen Promaster Perpetual Chrono A-T is radio-controlled in 24 cities, with atomic clock synchronisation for superior accuracy. Features a 1 second chronograph measuring up to 60 minutes, 12/24 hour time, alarm, power reserve indicator, anti-reflective sapphire crystal and water resistant to 200 metres. This watch has a Black Ion Plated stainless steel case and bracelet, paired with a black dial with white and yellow accents. Featuring Eco-Drive technology – powered by light, any light. Never needs a battery. Ref: CB5037-50E Product Information Brand: Citizen Technology: Eco Drive Case Material: Black Ion Plated Stainless Steel Case Size: 44mm Type of Strap: Black Ion Plated Stainless Steel Bracelet Glass Material: Sapphire Crystal Dial: Black Water Resistance: 200m Gender: Mens