Plantronics W440 Savi Office Wireless PC Headset -Convertible Convertible Headset with multiple wearing options (over the head over the ear and behind the neck Noise canceling microphone helps to block out your surrounding noise Hot swappable battery - lets you change battery in the middle of the conversation so you never run out of power (additional batteries sold seperately). Talk time: Battery provides up to 6 hours - Talk time: Battery provides up to 6 hours. DECT 6.0 NA SQL12 technology eliminates interference Wi-Fi network[83359-01]
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