It's a wind up...... Noooooooo..... All those shiny bits..... I could spend hours assembling, find it leaks, draining and adjusting, reassembling, getting a gurgle, draining again, adjusting, re-reassembling, finally enjoying a vape! Running out of juice, filling, finding it's leaking again...........
I think you get the picture lol ( must say I do actually love my Kayfun )
Boz