The Sennheiser AVX-MKE2-3 Pro Lavalier Set (1880-1900 Mhz) is a high quality wireless microphone system, suitable for use with a camera. The set consists of a receiver, a wireless beltpack and a lavalier microphone and offers great ease of use in addition to high quality. The compact receiver is easy to connect to the XLR connection. The AVX-MKE 2 set automatically adjusts the audio according to the input sensitivity of the camera. The system automatically chooses the best frequency, so you always have a perfect frequency without interference. The frequency range is between 1880MHz - 1900MHz, the set can be used worldwide, without a license. The system has a function that automatically determines the transmission power required for a stable connection and reduces battery consumption. The system turns itself off if it is not used for a while.