1980 JDM Seiko 7548-700B Quartz 150m Pro Diver (Pepsi)
Pieter on Twitter: "Based on the seiko 6309 the Seiko 7548-7000 5 jewels Quartz dive watch. Manufacture Year: December 1979, first production run of this year. https://t.co/Lydq3lsGak" / Twitter
Seiko Diver's - 20 years period evolution - 7 Friends & Watches Store