SANDBERG Bluetooth Office Headset Pro+ 80013319 126-18 Product Description: Sandberg Bluetooth Office Headset Pro+ - headset Product Type: Headset - Bluetooth - wireless Recommended Use: Portable electronics, computer - communication Additional Functions: CSR chipset Headphones Form Factor: On-ear Connectivity Technology: Wireless Wireless Technology: Bluetooth Bluetooth Version: Bluetooth 5.0 Sound Output Mode: Stereo Audio Specifications: Frequency Response 20 - 20000 Hz Microphone: Boom Controls: Mute, volume, multiple function button Manufacturer Warranty: 5-year warranty