Samson Airline Micro Camera Mountable Wireless Lavalier Microphone System &ndash; Samson Model SWAM2SLM10 Frequency Channel N2 (642.875 MHz) Small profile perfectly compatible with many of todays popular HDSLR cameras, along with smaller camcorders Tone squelch and auto mute for clear operation Lithium-ion rechargeable battery (7-8 hours of operation) The transmitter and receiver has a Multi-color LED displaying RF, low battery and power Includes AL2 Transmitter, AR2 Receiver, AR2DT Double Dock Charging Station, LM10 Lavalier Microphone, a system carry case, hot shoe mount, 3.5mm and XLR cables to connect to the camera, AC adapter and charging cables