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.