The ThinkPad X1 In-Ear Headphones provide a premium personal audio experience on-the-go, while giving an even richer and more immersive experience when used on Lenovo ThinkPad’s X1 family of laptops. This dual-driver headphones delivers high frequencies with full-body mids, to complement the deep rich bass while creating a luxurious audio in a portable in-ear casing. No need to stop your listening experience because of a calls. The ThinkPad X1 In-Ear Headphones feature in-line Mic and phone controls. The ThinkPad X1 Headphones provide great sound for business calls or personal music. Dual Driver- Balanced Armature Driver delivers crystal clarity for high range sound; dynamic driver provide rich bass; In-Ear fit with multiple sized ear pieces; Inline mic and answer-hang-up control; Fits 3.5mm audio jack on your notebook, workstation, tablet or smart phone; Foldable button case for tangle-free cable management