This Promaster Perpetual Chrono A-T from Citizen features atomic clock synchronisation for superior accuracy. Additional features include a 1 second chronograph measuring up to 60 minutes, 12/24 hour time, alarm, power reserve indicator, anti-reflective sapphire crystal and water resistance to 200m. This watch has a stainless steel case and bracelet, paired with a green dial. Featuring Eco-Drive technology - powered by light, any light and never needs a battery. Ref: CB5034-91W Product Informat Brand: Citizen Technology: Eco Drive Case Material: Silver Tone Stainless Steel Case Size: 45mm Type of Strap: Silver Tone Stainless Steel Bracelet Glass Material: Sapphire Crystal Dial: Green Water Resistance: 200m Gender: Mens