Universal 3.5 mm Connectivity Excellent Audio Ultimate Control The Lenovo Analog In-Ear Headphones Gen II feature a premium in-line mic that ensures youre heard when you want to be. Add to the mix a punchy 9mm speaker driver and youve got yourself an impressive listening experience. Plus with 3 sizes of ear tips to choose from, finding the perfect fit is a cinch. Performance Certification CBcTUVusTUV-merktekenCE EMC Cable colour Black Cable length 1.2 m Control unit type In-line control unit Product colour Black Headset type Binaural Recommended usage Office/Call center Wearing style In-ear Product type Headset Ports & interfaces 3.5 mm connector Yes Connectivity technology Wired Headphones Driver unit 9 mm Headphone sensitivity 110 dB Impedance 32Headphone frequency 100 - 20000 Hz Ear coupling Intraaural Maximum input power 5 mW Microphone Microphone frequency 100 - 10000 Hz Microphone type In-line Battery Battery operated No System requirements Windows operating systems supporte