Plantronics CS540 Convertible Wireless Headset

The CS540 has all the features you could ask for in a wireless headset starting with its elegant, contemporary design and lightweight 0.74 oz (21 g) headset with one-touch call/answer, volume, mute and flash controls all at your fingertips. The headset provides up to 350 feet of hands-free operation with a replaceable battery which charges in three hours and lasts up to seven. If that wasn't enough, it also offers a noise-canceling microphone which reduces background ambiance ensuring exceptional audio quality and easing listener fatigue. While you're the one listening, SoundGuard technology protects against sound levels above 118 dBA and Anti-startle technology detects and eliminates large and sudden increases in signal level.