Unfortunately it's just a standard dovetail neck join. It's a shame as the saddle is fret wire so the action is pretty much get what you're given, and the neck is slightly bowed so it's not the easiest guitar to play. It's on my to do list to get it sorted out but it's managable as it is. The scale length is 23".
Yes my Regal has a bow in the neck as well but it's not really a problem as the scale is short and I use silk and steels so the action is playable. I saw the adjustable neck version of your guitar in a shop recently, it sold within a day.
Fletcher JD2-S TenorTone. Curly mahogany neck, back and sides. Spruce top. Maple binding. Ebony fingerboard. Very small and sweet sounding instrument.