Push past boundries with the Citizen Promaster Tough series. Crafted with a two piece construction case, eliminating a caseback which results in extreme rigidity, shock resistance, and anti-magnetism. Equipped with Duratect coating on stainless steel which provides anti-rust and scratch resistance while being hypo-allergenic and 5x harder than steel. Super LumiNova hands and markers ease reading in low light conditions. Powered by Eco-Drive technology which never requires a battery change. Ever. ISO Compliant Citizen Eco-Drive solar powered movement never requires a battery change Monocoque stainless steel case with Duracoat to make it anti-rust, scratch resistant, and hypoallergenic Black dial with super Luminova hands and markers Anti-reflective sapphire crystal Date display at 3 o'clock Caliber E168 Water resistant to 200 meters (660 feet) Duracoated stainless steel bracelet with fold over clasp with push buttons. 42mm case width (approximately 1 21/32")