1.Signal headset for incoming call
2.Lifts Handset from headset’s signal
3.Adjustable arm to fit different handset shape/size
4.Different lift height adjustments
5.External Microphone Sensor
6.Connection status LED-indicator
1. Comfortable with over-head wearing style.2. Wideband audio for exceptional sound quality.3. Up to 8 hours of talk time, at least 36 hours standby t..