Shure BLX1 Bodypack Transmitter The durable BLX1 features a lightweight, ergonomic design and adjustable gain control. Complete with a seamless design, adjustable gain control and up to 14 hours of contonious use per battery cycle, the Shure BLX1 Bodypack Transmitter is ideal for all uses. It also boasts a 300 ft (100 m) transmission radius for total flexibility onstage. Note: When purchasing separate wireless components, please match their frequency bands to ensure proper system operation. Shure SM35 Performance Headset Condenser Microphone Ideal for multi-instrumentalists, the SM35 is a durable cardioid condensor microphone is perfect for a hands-free vocal performance. Available with the standard TA4F (TQG) connectivity, the SM35 is totally applicable to any Shure wireless headset system. Shure BLX4R Rack Mount Receiver The BLX4R Rack-mountable receiver comes equipped with removable antennas for quick distribution. Easily rack-mountable with durable metal body, the BLX4R is simple to set up and easy to control. Interference won't be an issue, as the One-touch QuickScan quickly locates the best open frequency to combat it. The antennas are also movable to suit your distribution needs. Includes a rack mount kit. Note: When purchasing separate wireless components, please match their frequency bands to ensure proper system operation.