Sony ECMW1M Wireless Microphone (Black) Interoperability and compatibility among Bluetooth devices vary Communication distance up to approximately 100' (30m) Two way communication, up to 30 meters from the camcorder NOTE: Kindly refer the Instructional Video from the Image Section and User Manual from the Technical Specification before use which is highly recommended. In-the-box: Wind Screen; Carrying Pouch; Arm band; Earphone; Earphone Hanger; Connector protect cap