I still love and use my old Pico 75w mods, small and reliable.
Oooops - thank you! Yes it would then - sorry!would be perfect but the zenith is 24mm
so it would have to be the Pico 25
https://www.fasttech.com/products/0...hentic-eleaf-istick-pico-25-85w-vw-tc-apv-box
or the Pico 21700
https://www.fasttech.com/products/0...hentic-eleaf-istick-pico-21700-100w-tc-vw-apv
but yeah, those or the Kroma-A if you don't want removable batteries.