1.Comfortable with over-head wearing style 2.Wideband audio for exceptional sound quality. 3.Bluetooth Specification: V50. 4.Profile: Headset:1.2 Handsfree:1.6 A2DP 5.Highperformance 6th Generation CVC technology. 6.Up to 15 hours of talk time, at least 500 hours standby time 7.Battery Full charge in less than 3 hours 8.Distance: up to 30m 9.Volume and mute controls. 10.Multifunction button for easy call handling. 11. PC and mobile phone connect 12. Noise-cancelling microphone. 13.Advanced hearing protection with safetone . 14. Comaptible with Lync/SfB, Busy Light on headband