Stereo headset,

Stereo headset, "Los Angeles", black

Stereo headset with in-line microphone Passive noise canceling, for optimal music experience Large comfortable ear cushions Comfortable, adjustable headband 3.5 mm smartphone plug (stereo+mic)
Connector: 3.5 mm 4-pin combo-jack, stereo + microphone Sensitivity (at 1KHz) : 105 +/-3 dB Impedance : 32 Ohm +/-15% Speakers: 40 mm diameter, 16u mylar Frequency response: 20 - 20000 Hz Input power: up to 100 mW max Distortions: < 3 % at 1KHz 40mW Microphone: condenser omni-directional; sensitivity:-58 ? 3 dB(0 dB=1V/uBar at 1KHz), -38dB (0 dB=1V/Pa at 1KHz), 30 - 16000 Hz Net weight: 0.2 kg Cord length: 1.5 m