Adjustable power lets you change how hard the device heats the coil, which changes warmth, flavour and how quickly liquid is used. A fixed-output device does that for you. If you want a simple routine, fixed is fine. If you like to tune things, adjustable gives you room, as long as you stay inside the coil's range. Single-use vapes have been banned since 1 June 2025, and you must be 18 or over to...