The Shure BLX14R/MX53 Headset Wireless System gives you world-class design and rock-solid build quality, along with easy setup and operation. Thanks to Shure's cutting-edge QuickScan technology, frequency-selection hassles are a thing of the past. The system includes the BLX4R rackmount receiver with rackmount kit, the BLX1 bodypack transmitter, and the discreet, comfortable MX153 omnidirectional condenser earset microphone. If you're ready to perform untethered, Shure's BLX Wireless systems are a smart, affordable choice. Enjoy legendary Shure sound and performance. Take the stage confidently with the Shure BLX14R/MX53 Headset Wireless System.Providing up to 14 hours of use with two AA batteries, Shure's BLX Series transmitters let you perform with confidence. If you're ready to go Wireless, Shure's BLX Wireless systems are a smart, affordable choice. Take the stage confidently, backed up by Shure's legendary microphones, decades of Wireless design experience, and tour-tested build quality. Available in a broad selection of bodypack and handheld configurations, BLX vocal, guitar, headset, and presenter systems are ready to rock, right out of the box.A choice of single-channel, single-channel half-rack, and dual-channel receivers, as well as vocal, guitar, headset, and lavalier options, makes Shure's BLX Wireless systems quite versatile. And the ability to run up to 12 compatible systems per band protects your investment, letting you start out modestly and expand as necessary.