Those new listed specs on that site are for the taller 'M' one. It looks like the M-S is 22mm.
And it says 3.5ml for the M, but other sites list the M at 2.5ml, but probably
both are 3.5ml?
But nice to see the first listing of some specs.
That site showed a picture of the coil, looks the same as the Air.
And the translated page
appeared to infer the coils are the same. Would seem crazy to change them.
View attachment 419846
eta: and they show the coils as the same as the air!
'Pack of 5 heads ELEAF BDC 20 Watts for clearomiseur AIR GS / GS AIR-M'
http://www.vapo-depot.com/clearomis...-watts-pour-clearomiseur-gs-air-gs-air-m.html