RHA T20i Headphones: High Fidelity, DualCoil, Noise Isolating, In-Ear Revolutionary DualCoil dynamic driver engineered to deliver refined, high resolution audio. Ergonomic, noise isolating design created using injection moulded stainless steel. Patent pending, mouldable over-ear hooks. Tuning filter system for sound signature customisation. 3-button remote and microphone for use with compatible Apple devices. 1.35m, high quality oxygen-free copper cable with reinforced gold plated connection.