Poly CS540A DECT 1880-1900 MHz HeadsetHands-free productivityThe CS540 convertible DECT™ headset provides professional performance so you can get more done — even on the move. The noise-canceling mic reduces background noise interruptions, ensuring great audio quality and easing listener fatigue. Performance Country of origin China, Mexico Hearing protection technologies SoundGuard DIGITAL Sound pressure level (max) 118 dB DECT connectable Yes Product colour Black Headset type Monaural Recommended usage Office/Call center Wearing style Ear-hook Product type Headset Ports & interfaces Wireless range 120 m Connectivity technology Wireless Headphones Ear coupling Supraaural Microphone Microphone type Boom Battery Talk time 7 h Weight & dimensions Weight 21 g Packaging content Base station Yes AC adapter included Yes Charger Yes