Shure SLX 2 / Beta 58A / G4E - handheld transmitter for SLX series with Beta 58A dynamic capsule (supercardioid). Display with group, channel and battery, 960x switchable frequencies, menu lock and on/off switch, 2x 1.5V batteries, frequency range: G4E 470 - 494 MHz, up to 20 simultaneous systems (on multiple frequency bands).