Logitech H820e Wireless Headset, Stereo Headphones with Noise-Cancelling Microphone, USB, Headset Controls, Indicator LED, PC/Mac/Laptop - Black by Amazon.co.uk

• DECT Spectrum Wireless Connectivity : Provides exceptional wireless range for your headphones, that won’t interfere with Wi-Fi devices in your office

• In-call LED Indicator Light : Located on the backside of the boom mic, this provides visual alert to those behind you that you are on a call, preventing accidental disturbances during calls. With Microsoft Lync and Cisco Jabber deployments

• On-Mic Mute Button and Mute Indicator LED Light : Intuitively located on the boom mic, the mute button is easy to identify. An LED light that can be seen while wearing the headphones provides a visual mute status by glowing red while muted

• Up to 100 m (more than 300 ft) Wireless Range : Enjoy the freedom to move widely around the office during conference calls while staying productive

• Optimized : For Microsoft Lync and certified for Cisco; Compatible with most leading UC platforms. Ensures enterprise-quality audio and an integrated experience with most all business-grade UC platforms