Seiko 3rd Diver 6306-7001 Scubapro 450
Seiko 6306-7001 was the 3rd generation of Seiko diver watches. The overall design of the watch is quite similar to its predecessor, Seiko 6105. However, there were some major improvements added to Seiko 6306. For example, Seiko 6105 is a date-only watch, but Seiko 6306 also displays day in Japanese Kanji or English. Another significant change was the crown. Seiko 6306 has a true screw-down crown that further prevents water from damaging the movement. There was a similar model targeting for international markets, Seiko 6309, while 6306 was only sold in Japan. This watch here is an extremely rare version which was manufactured solely for Scubapro, a well-known supplier of diving tools. It is generally believed that no more than 100 pieces were produced, and these Seiko 6306 Scubapro 450 are highly sought after by collectors nowadays.
Year: Jul 1979
Diameter (excluding the crown): 44mm
Caliber: Original Cal.6306A automatic movement
Strap/Buckle: Modern Seiko rubber strap and buckle
Accessories: Original 1970-80s Seiko buckle
Service History: Unknown