Jabra GN9120 MidiBoom. Headset type: Monaural, Wearing style: Head-band, Product colour: Black. Connectivity technology: Wireless, Wireless range: 150 m. Ear coupling: Circumaural, Acoustic system: Semi-open. Talk time: 12 h, Standby time: 92 h, Charging time: 1.5 h. Weight: 26 g