It includes BTD 800 dongle for joint pairing to mobile plus Lync 25 mtrs range. For the demanding mobile professional, the EPOS ADAPT Presence Grey UC Bluetooth Headset is a compact and discrete single-ear headset that comfortably stays in place with an attached ear hook. Even without a boom mic resting in front of your mouth, the ADAPT Presence is capable of clear and natural-sounding conversations. Key Features -For Smartphones & PC Softphones -UC Optimized -Certified Skype for Business -Up to 10 Hours of Talk Time