Logitech Ultimate Ears SuperFi 4 Noise-Isolating Earphones

o Type: In-ear
o Frequency response: 20 Hz-15 kHz
o Impedance: 29 ohms, 1 kHz
o Sensitivity: 105 dB SPL/mW, 1 kHz
o Speaker type: Precision, balanced armature
o Weight: 0.57 ounces (16.1 grams)
o Noise isolation: 26 dB