This JDM 7546-7040 from August 1978 is one of the rarer of the 754x sport divers. Seiko put everything they had into this watch and it is exceptionally high quality. It’s in fantastic condition and is all original. The dial is Seiko’s almost black deep ocean blue with a matte finish and radial brushing on the metal base layer. I fully serviced it. The crystal is new, it has a new battery, and was upgraded with the center wheel jewel. It has all new seals and is completely cleaned.