Hi all....
It has a metal bit that slots into the place where the bobbin cover usually lives!!
It really is a bit Heath Robinson, with a vicious spike that goes into the centre of your desired circle...having said that it does work.
So you would have to have a top loading bobbin of the same size and shape as The Splurge (aka Atelier5) which sounds easy but then Janome are the people who can make the slot for the additional spool holder different in each machine!!!
Oh and Fran, the only difference between the 5 and the 7 (as far as I can make out) is that the 7 has a italic/cursive font!)
Is that really worth the extra £300 ????