Seiko Prospex Sumo
Seiko Prospex SUMO time-piece was introduced in 2007, as one of an extensive range of a classic dive watch. One of the famous Seiko Sumo model is Seiko SBDC097 that has a diameter of 45 mm. this model is not much far from the older Seiko SSC761J1 model but features some few updates and some visual improvement. Seiko Sumo retains the Seiko's original features such as its typical shape, its adjustment screw down 4 o'clock, and polished stainless steel casing.