Seiko Orange Monster scuba diver’s watch model SKX781K1

Seiko Orange Monster scuba diver’s watch model SKX781K1

* Seiko Orange Monster scuba diver’s watch model SKX781K1/SKX781 in excellent pre-owned condition.
* Automatic movement (caliber 7s26-0350, 21 jewels)
* Water resistant up to 200m
* Orange dial with Lumibrite hands and markers
* Dial signed 7S26-2084-TG-2
* Stainless steel case and bracelet
* Screw down crown
* Diameter 42mm (excluding crown) – 46.5mm (including crown)
* Case thickness 11mm
* Includes new, unworn matching orange ZULU strap!
* Retail price is $475

What is the difference between model SKX781K1 and SKX781K3?
… The difference between these two model numbers is that SKX781K1 has a stainless steel bracelet and SKX781K3 has a Seiko rubber strap.