Alternative to LE Yellow Seiko Sumo | WatchUSeek Watch Forums
My Eastern Watch Collection: Seiko Prospex Green Sumo SPB103J1 (similar to SPB101J1) - Continuing the Tradition with Further Improvement Possible, A Review (plus Video)
My Eastern Watch Collection: Seiko Prospex JDM Baby Marinemaster 200 Meter Diver SBDC061 (similar to SBDC063 or SPB077/SPB079) - Similar to a Seiko Sumo, A Review (plus Video)
$800 Rolex Hulk Alternative You Can Buy | Seiko Sumo SPB103J - YouTube
Head to Head to Head: Three Divers from Seiko | WatchPaper