In-ear headphones. The T20i Black is a high performance in-ear headphone featuring revolutionary DualCoil dynamic driver technology capable of outperforming conventional drivers in levels of resolution, clarity and detail. The injection moulded stainless steel housings feature a tuning filter system to adjust the sound signature, while a comfortable, noise isolating fit is ensured by patent pending, mouldable over-ear hooks. Impedance: 16 Ohm. Weight: 41 g. Colour: Black