Choice of wearing styles, including the 3-in-1 convertible options (Savi 8240/8245) Line of sight range up to 590 feet/180 meters Up to 13 hours talk time with over-the-head (OTH) models (Savi 8210/8220) Up to 7 hours talk time (Savi 8240) or unlimited talk time with the Savi 8245 model Keep callers in the zone with the only DECT™ headset featuring active noise canceling (Savi 8220) Ensure that sensitive conversations stay private-headsets are DECT™ security certified by the DECT™ forum using the latest security standards Tune out office noise and nearby conversations with noise canceling microphone plus close conversation limiting Get crystal clear audio with the latest DECT™ technology supports wideband audio without impacting user density