Ultrasone Saphire, In-Ear Earphones, Made from high-quality diecast metal, 2-Way hybrid technology: 4 High-performance BA (balanced armature) drivers + Electrostatic dual super tweeter, Frequency response: 10 - 50,000 Hz, Impedance: 25 Ohm, Sensitivity (@ 1 kHz) SPL (sound pressure level) @ 0.1 mW: 106 dB, 1.2 m Long gold-coated detachable cable with 3.5 mm jack plug, 1.2 m Long detachable balanced cable with 4-pin, gold-plated 2.5 mm jack plug, Weight: 15 g (without cable), Includes a transport case, 3 pairs of Comply Tx-500 (S/M/L), and 3 pairs of SpinFit CP145 (S/M/L)