Plantronics W445 Savi Office Wireless PC Headset. Wireless freedom that won't weigh you down. For PC-based office and remote workers the Savi 400 Series offers excellent audio quality up to 300 feet of wireless range and your choice of 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.