From the article, the fragment about the SF2 sidemount rebreather: > There are only a few of these computer-controlled devices in the world. From quick googli

From the article, the fragment about the SF2 sidemount rebreather: > There are only a few of these computer-controlled devices in the world. From quick googling I found out that this type of rebreather is "certainly the most popular Sidemount rebreather in the world." [1]. It is relatively inexpensive also (7k EUR). Why are there only a few of them in the world then? Is he talking about some special, modified type of it? [1] https://www.divestock.com/scuba-force-sf2-sidemount-rebreather https://www.divestock.com/scuba-force-sf2-sidemount-rebreath...