Seiko Prospex Sumo Special Edition Baseworld 2019 - YouTube
Seiko SPB103J] Green Sumo 2019 : r/Watches
Unboxing 2019 New Seiko Green Sumo Prospex Diver - YouTube
Seiko - Seiko Prospex diver's watch known to many as the 'Sumo'. This watch has long been a Seiko favorite and it is now updated with a longer power reserve (70 hours)