Specifications:- Recommended usage: Office/Call center. - Connectivity technology: Wireless, - Frequency band: 1.88 - 1.9 GHz, - Wireless range: 180 m. - Acoustic system: Open, - Headphone frequency: more→150 - 6800 Hz, - Magnet type: Neodymium. - Microphone type: Boom, - Microphone frequency: 150 - 6800 Hz, - Microphone direction type: Bidirectional microphone. - Battery technology: Lithium Polymer (LiPo), - Talk time: 12 h, Battery recharge time: 1 h