Seiko Sumo 3rd GEN Sunburst Black Men's Watch SPB101J1 – Prestige
Seiko Prospex Sumo Automatic Diver SPB101J1 - 45mm in Stainless Steel - US
Seiko Men's Prospex Automatic Sumo Stainless Steel Bracelet Black Dial SPB101J1 - First Class Watches™ USA
Prospex 200M Automatic Black Sumo Sapphire 3rd Gen Ref. SBDC083 – Gnomon Watches
My Eastern Watch Collection: Seiko Prospex Green Sumo SPB103J1 (similar to SPB101J1) - Continuing the Tradition with Further Improvement Possible, A Review (plus Video)