PLNCS540HL10 Features: -Headset. -Delivers hands free productivity, simple plug and talk installation. -Lightweight. -Wear over ear or over head. -Adaptive power system optimizes for range and talk time so users get up to 7 hours of talk time. -DECT technology provides better audio, eliminating interference from Wi-Fi networks. -Noise canceling microphone reduces background noise interruptions, ensuring great audio quality and easing listener fatigue. -Enhanced digital signal processing (DSP) provides more natural sounding voice. -1 Touch controls include call answer/end, volume up/down and mute. -Provides mobility allows multi task hands free up to 350 feet and magnetic docking. -Energy efficient power management and one touch controls. -5. 5" H x 3. 8" W x 3. 5" D, 1 lbs. Color/Finish: -Color: Black. Specifications: -Premium wideband audio quality delivers audio performance up to 6, 800 Hz.