SPB101 Sumo] just sharing this wrist shot with other Seiko fans here : r/ Seiko
Seiko Prospex SBDC083 | WatchShopping.com
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)
Seiko Prospex Men's Black Watch - SPB101 for sale online | eBay