Earlobe clip-on model, the extruding tube is sound induction tube, the middle part with loops are earlobe clips that are holding together by magnets.

• 不过，若谈到前一代产品，与耳塞式耳机一比，特色就很鲜明了。上图是两个耳机吸附的情形。突出的部分，就是导音管。中间则是耳夹的部分。