LENOVO Wireless VoIP Headset Teams 80008028 4XD1M80020 Product Description: Lenovo - headset Product Type: Headset - Bluetooth - wireless - USB-A via Bluetooth adapter Colour: Black Headphones Form Factor: On-ear Connectivity Technology: Wireless Wireless Technology: Bluetooth Bluetooth Version: Bluetooth 5.3 Sound Output Mode: Stereo Audio Specifications: Frequency Response 20 - 20000 Hz - Sensitivity 109 dB +/- 2.5dB Impedance: 32 Ohm Microphone: Boom Microphones Included: 3 Controls: Mute, volume, answer/ignore/end/hold, play/pause/track forward/back Software Certification: Certified for Microsoft Teams Manufacturer Warranty: 2-year warranty