FYI: all newer Jet-Us are G-L-U-E-D. So you know what to expect. Otherwise I would ask for cheaper modding cost.
Also:
JetuE17A/JetuE21A kit contains 3pcs (10°, 20°, 30°) 10mm textured TIR lens and LED module only. You have to make the optic holder yourself to suit E17A and E21A.
Jetusolis kit contains 1pc 10mm textured 30° 10mm TIR lens and LED module only
E17A use phosphor converted red. It has much wider spectrum coverage than normal narrow band color LED. We can say that this PC color LED has higher “CRI”. Under monochromatic narrow band LED, only limited colors close to the emitted spectrum show color, everything else will be very dark or black. Under PC LED, you see more colors.
Clemence, I’m not in but I’d like to let you know that I can’t edit the spreadsheet (wanted to sum things up). It may be because I don’t have a google account?