02-XTAGMIC-UPG: xTag mic only...NO BASE. Upgrade to xTag USB Wearable Microphone Only with Field Replaceable Battery xTag mic: The xTag wireless microphone's wide band audio combined with HIPAA compliance security, which is the most widely used and successful general-purpose speech-enabled clinical documentation solution in the healthcare industry. Now, medical personnel do not need to be tethered to a computer as the xTag wireless microphone allows for natural mobility and is rechargeable - eliminating the need to wear a headset or a bulky transmitter.