Superior Call Mana gement • Manage PC voice communications with the only portable DECT™ wireless system on the market • Hot swappable battery1 (W440) lets you change battery mid-conversation delivering unlimited talk time • One-touch call answer/end/flash, vol+/-, and mute from the headset for simple PC call management • An energy-efficient adaptive power system, delivers longer talk and standby times OUTSTANDING AUDIO QUALITY • DECT technology provides better audio; eliminates interference from Wi-Fi networks • Advanced wideband audio using CAT-iq technology for high definition voice quality • 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 Advanced DECT Wire less Security • Keep calls and information safe and secure with the latest DECT security certification • Most secure DECT headset on the market certified by DECT Forum OPTIMIZED FOR UNIFIED COMMUNICATION Connects to PC and Mac via USB adapter Ideal for Users in campus-like business environments/remote workers requiring premium sound quality and portability Talk time Up to 7 hr (W440)1; Unlimited (W445)1; Up to 6 hr (W430); Up to 13 hr (W410, W420) Headset weight W440/445 Convertible: 21 g; W430 Over-the-ear: 25 g; W410 Over-the-head (monaural): 74 g; W420 Over-the-head (binaural): 96 g Wireless frequency DECT , range up to 90 meters Audio performance PC Wideband: up to 6,800 Hz Hearing protection Soundguard® DIGITAL TM : protects against sound levels above 118dBA; Savi 410,420 and 440 feature acoustic protection and limiting compliant to ACIF G616, protecting users from sound levels above 102dBA; Anti-startle detects and eliminates any large sudden increase in signal level; Time-Weighted Average prevents average noise level from exceeding 80dBA or 85dBA Limited warranty 2 years