I bought this SRP655K on 1st June 2015 and have worn it for three weekends. I also own the blue variant, SRP653K and overall, I am very please with both watches. They are the biggest 4R based divers in Seiko offerings so far. They made all other 4R and 7S divers “obsolete” to me.
Here is a quick pictorial review.
Top of the shroud. The silicon strap is a magnet for dust as you can see below.
Here is a shot of the side profile with strap. Crown can be bigger IMO.
The watch sits low on the wrist and the curved back allows it to sit firmly on the wrist. Of course it has to be strapped on with enough tightness.
Below is a comparison with the Emperor Tuna, SBDX011, a watch that sits high on the wrist.
Here’s the caved in caseback.
The silicon strap comes with a nice buckle and metal keeper.
It is also a magnet for wrist cheese.
Because the watch is big, you may get a “tail” as shown below.
Size comparison with Emperor Tuna and Fieldmaster chrono.
Thickness: 12.5mm (measure at 3 o’clock position), 16.5mm (measured at 11 o’clock position)
Lug width: 22mm