The OEM Plantronics CS540 headset is designed for office phone use, providing superior comfort and mobility with a range of up to 350 ft. It features digital encryption for secure conversations and utilizes voice-dedicated 1.9 GHz DECT technology for exceptional audio quality, offering up to 6 hours of talk time. The battery charges 80 percent in just 1.5 hours and fully recharges in 3 hours. With three wearing styles available, this headset ensures ultimate comfort, complemented by wideband audio support and a noise-canceling microphone.