This wireless headset allows you to feel untethered from your desk while you're on a phone call. Experience the freedom of staying connected while you roam around your desk and nearby areas. Intended for use with MiVoice Business Release 8.0 SP1 or higher. Key Features: Crystal clear conversations with HD audio so lifelike, it sounds like you're there Talk all day with up to 8 hours of talk time, easily recharged through the charging base attached to the phone Noise-canceling microphone Wireless connectivity compatible with Mitel phones, allowing for increased productivity; employees can share, take notes, collaborate, or work along during calls End users can install the DECT headset, simplifying and speeding deployment Charging point powered directly via the MiVoice 6930/6940 expansion port or PKM expansion port