This is a Seiko Super Runners watch, a limited edition released for the 2016 Tokyo Marathon. It was sold as a limited edition of 1500 (I think). It's perfect for lap timing on the track. Operation has been confirmed ◎ The settings are off, so they need to be reset. Photos 2, 3, and 4: There is a small amount of rust on the back. No instruction manual. It has the same operating instructions as a general Super Runners watch. Please understand that this is a used item before purchasing.