Bang & Olufsen Beocom Portal Premium Bluetooth wireless headphones with Microsoft teams support, Brand new unused all set, only opened to take pictures. stunning colour, active noise cancellation Frequency Range 20-22,000 Hz Advanced Sound Features Adaptive Active Noise Cancellation Transparency mode Driver Type Electro-dynamic driver w/ Neodymium magnets, 40 mm diameter Driver Sensitivity 95dB @ 1kHz / 1 mW Customizable Sound EQ Presets available and fully customisable through Bang & Olufsen App Designer Jakob Wagner Bang & Olufsen Design Team Fit Over-ear Materials Aluminium Leather Fabric Polymer Rubber
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