Shure BLX24R/B58 Wireless Handheld Microphone System | Frequency: H10 (542-572 MHz)The BLX24R B58 Wireless Handheld Microphone System from Shure provides professional caliber sound in a build that's simple to set up and easy to use. It's ideal for small venues, special event spaces, houses of worship, conference centers, and educational or corporate facilities. This system includes a BLX4R Rack Mount Receiver, a BLX2 Handheld Transmitter with an SM58 mic capsule, two 1 4 Wave Antennas, and all the accessories you need to set up your