This Seiko 'Sumo 1st Gen' Prospex Ref. SBDC001 from 2012 is in great condition. It has seen minor wear since its purchase. The SBDC001 was released initially as a Japanese domestic model piece and is part of the Seiko Prospex line of divers. The Seiko 'Sumo' was originally presented in 2007 where it was coined its nickname from enthusiasts due to its bulky design.
The watch is in overall great condition with minor hairline scratches around the case and bracelet, and minor wear visible on the bezel. The case is large at 45mm in diameter, 13.5mm in thickness and a lug-to-lug measurement of 52.5mm - it holds a lot of wrist presence as a serious dive watch. The dial features Seiko's logo under 12 o'clock, Prospex logo above 6 o'clock and a date function at 3 o'clock. Seiko's LumiBrite material is featured on hands, index(es) and bezel. Inside is Seiko's caliber 6R35 with a 70-hour power reserve. The sapphire crystal is slightly domed and features anti-reflective coating on the inside. A screw-down crown and stainless steel case allow for up to 200 meters of water resistance.