Jam to the beat of your own music with the KSH-280 Stereo Headset. A comfortable yet adjustable design provides long-lasting use, so you can wear it all day long without causing any discomfort. 27 mm diameter drive units deliver a wide frequency response, lower distortion and also a deeper bass you can really feel. Headset Driver unit: ? 27mm Max. power output: 150mW Frequency response: 20Hz-20kHz Impedance: 32? Sensitivity: 100dB Microphone Directivity: omnidirectional Frequency response: 30Hz-16kHz Impedance: 2.2k? Sensitivity: -58dB General Connection type: single TRRS 3.5mm Buttons: in-line volume control Cable length: 70.9in Dimensions: 125 x 7 x 1.6 in Weight: 0.13lb Warranty: one year