The OEM Plantronics CS520 headset is designed for office use, offering superior comfort and mobility with a wireless range of up to 350 feet. It features digital encryption for secure conversations and utilizes voice-dedicated 1.9 GHz DECT technology for exceptional audio quality, providing up to 10 hours of talk time. The battery recharges 80% in just 1.5 hours and is fully charged in three hours. This over-the-head, two-ear headset includes a Noise Cancelling microphone, though a lifter is not included.