The ideal entry-level wireless microphone system for small venues, BLX offers professional quality sound with simple setup and an intuitive interface. Transmitter form factors include handheld (customizable at designstudio.shure.com), bodypack, headworn, lavalier, instrument clip-on, and combo Single-channel, dual-channel, and rack mount receiver options available Powered with AA batteries Offers a 24 MHz tuning bandwidth and up to 12 compatible systems per frequency band (region dependent) Warranty: 2 years.