Both inside and out this is a beautiful and unique timepiece - with a fascinating "Start-Up" story to go along with it. If you Google "Marloe Lomond Chronoscope" you'll find some very well written articles by "Worn & Wound" and "The Time Bum". These articles do a much better job than I could here at bringing this watch to life - and the photos are far superior - so I suggest you check them out! They will also explain the curious history of the mechanical movement which has a heritage that traces back to the 1940s.
The watch is #0604 and is of first edition status. It is a manual wind chronoscope vintage 2017. The movement is a Sea-Gull ST1901 Column Wheel design - 19 jewels, 21,600bph, 40hrs power reserve. (a great conversation piece) The bezel is ceramic and measures 43mm. The high-dome acrylic crystal measures 13.6mm at its zenith. Sapphire exhibition case back. 30-minute chronoscope function. 5ATM/50M water resistance. Two register sub-dial. Double layer dial is in Vintage Coffee.
The sale includes all three straps shown in the photos. Two of which have never been worn. The one in place is a Steinhart Dark Chocolate Vintage Crash (large) 22mm. (my wrist is 7.5inches) The buckle is a 24mm - somehow I and Steinhart got things mixed up. (it can be replaced via the Steinhart site for a few bucks if it matters to you - but functionally I find it a non-issue)