The SPB range slots in under the SLA range in the Seiko hierarchy, and the lower price – along with the technical specifications – certainly reflects that. (The SPB207 goes for $1,350, whereas the SLA047 sits at $3,200.)
link This model is also born
link from
link the same 1968 6159 diver, but whereas the SLA047 seeks to accurately capture the spirit of the original right down to case dimensions, the SPB207 is intentionally designed with modern sizing preferences in mind.