All the features a superior pair of earphones is expected to have \u2013 and more. The OS has a three-button remote, MEMS technology and can be used with iOS, Android and Windows. Equipped with custom dual balanced armatures, 103 dB @ 1 kHz, 50 Ohm @ 1 kHz, 5 \u2013 20 000 Hz (Full) and 8 \u2013 16 000 Hz (+\/- 5 dB). Earphones are stainless steel, PVD matte and -40dB @ 2kHz. The cord is a gold plated L- shaped 3.5mm (1\/8 in,) custom threaded SSMCX. Q-Jays Earphones are crafted to provide the ultimate in authentically detailed sound. Advanced audio engineering is integrated with Metal Injection Moulding, CNC and laser cutting and the earphones are the smallest to be found with exchangeable cables.