The only downside of the SLA017 (SBDX019)
The all bracelet model with matte black dial is the SBDC051 (SPB051)
After the Astron was re-launched back in 2012, I finally got myself an Astron for the collection. The delay in getting one was due to the fear factor I get with new technologies – will they actually work? Moreover, when the first batches of Astrons with the 7X Series Calibers installed were on sale, there were a number of issues highlighted by owners. Predominantly, problems surrounding the power usage and the lack of battery capacity were reported. These feedbacks from consumers prompted Seiko to redesigned the GPS module and come out with the latest 8X Series Calibers which eliminated issues that were brought out.
As you all know I am an active collector of the Prospex series of watch by Seiko. Tool watches built not for style but for professional tradesman to be used and abused. The genre within this series that I am follow closely is the mechanical diving watches (I do have some Spring Drive powered watches but I tend to lump these as being mechanical as well. I guess sooner or later I will have to look at solar powered as Seiko seems to be making a push towards building this technology into more of their newer offerings).