Sennheiser ADAPT Presence Grey UC Headset Optimised for UC Switch seamlessly between softphone and mobile phone Three digital noise-cancelling mics SpeakFocus technology for enhanced HD voice quality WindSafe technology reduces wind noise Voice-controlled - Tap into Siri and Google Assistant and be online with a touch of a button Talk time: up to 10 hours (narrowband mode); up to 8 hours (wideband mode) Standby time: up to 14 days Charge time: 1 hour 20 minutes Range: up to 25 m