I tend to use passive headphones with 3.5mm jack, they have no electronics in them except the small speakers. They do not collect data. They are also used by musicians when doing audio mixing so its should sounds neutral and good.
That the headphones does not have electronics and batteries means they will last longer and thus be be better for the environment.
That the headphones does not have electronics and batteries means they will last longer and thus be be better for the environment.