Seiko Professional 300m Diver Tuna 1This watch is the second line of Professional Diver 600m. It is called "Tuna" because it looks like canned tuna. Very good looking and comes with original rubber strap. [Condition] The case and back case is very good condition only with slight marks. Engrave on back case is remaining clearly. The crystal has slight mark on 4 but it does not stand out. The crown screw is available and calendar quick set is also working. Of course it is original. Brand: