Audeze LCDi3, In-Ear Earphones, Bluetooth 5.0 (AptX/AptX HD), Semi-open, 30 mm transducer, Planar drivers for excellent dynamics and frequency reproduction, Magnetostatic surface emitter with ultra-thin membrane (0.5 mm), Fluxor magnetic fields, Uniforce voice coil design, Fazor elements, Impedance: 30 Ohm, Frequency range: 10 - 50,000 Hz, Maximum sound pressure level: 130 dB, Total harmonic distortion (THD) @100 dB: >0,1 %, Vibration-damping magnesium housing, Includes nylon travel case, various sized ear molds and holders, CIPHER Bluetooth module and 1.5 m auxiliary (3.5 mm) cable