Check the listing for details. FiiO FF5 Carbon-based 14.2mm Dynamic Driver Earbuds,Alumium Shell With 3.5mm/4.4. Color: Black, Condition: Open box. Listed at 99.99 USD. FiiO FF5 Carbon-Based Dynamic Driver in-Ear Earphone Clear Sound & Wide Soundstage with 3.5mm/4.4mm MMCX Cable, Alumium Shell Design: Featuring a specially-developed large 14.2mm dynamic driver, PU gasket + carbon-based diaphragm driver, extended bass acoustic resistance pipes. Sound: Live soundstage, sufficient subbass, lush vocal, clear treble. Cable: Standard 4-stranded 392 wires total silver-plated monocrystalline copper cable to reduce the skin effect and improve treble resolution. Playability: It adopts mmcx detachable cable design, and comes with 3.5/4.4mm headphone plugs, allowing you to replace broken cables or experiment with different cables made of various materials. Also complimentary different styles of sponge pad and anti-slip silicone ring.can adjust the sound to increase the playability of the earphones.