Small profile perfectly compatible with many of today"s 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