... four wearing styles including the Savi 440 - the lightest DECT headset on the market that features a hot swappable battery for unlimited talk time and can be worn three ways to match your personal style. It also comes with a high-quality carrying case so you can pack it up and go. Impress your callers with advanced audio technology and world class sound quality, all in one convenient, portable package. It's the only PC-based wireless headset system that goes the distance. FeaturesMultitask, hands-free up to 120 metersOne-touch call answer/end, volume +/-, mute and flash with supported softphonesUSB DECT adaptor for increased PC mobilityVoice-dedicated DECT technology eliminates Wi-Fi interferenceAdvanced wideband audio using CAT-iq technologyNoise cancelling microphone filters out background noiseEnhanced Digital Signal Processing (DSP) technology provides more natural sounding voiceSoundGuard technology mitigates audio spikesExtra InfoWireless Type: DECTCorded/Cordless: CordedEarpiece: Dual EarpieceOver Head Support: YesMute Switch: YesMain Colour: Black