SpecificationsSound: stereoFrequency response: 20 Hz - 20 KHzSpeaker size: 50 mmSpeaker impedance: 21 ΩSpeaker sensitivity: 108 dB ± 3 dBMicrophone type: omnidirectionalMicrophone size: 6x5 mmMicrophone sensitivity: -38 dB ± 3 dBBacklight: whiteConnectors: 2x 3.5 mm jack, USB (for LED light)Cable length: 2.1 mFeatureClosed, over-ear design for powerful bass soundsSoft-cushioned leather ear cupsSelf-adjustable headbandBuilt-in volume controlBacklit microphone