Ultra-compact and extremely versatile wireless microphone system Series IV 2.4GHz digital transmission, 128-bit encryption crystal-clear audio at up to 200m (line of sight), optimised for extremely stable operation in dense RF environments 3.5mm TRS analog output, USB-C and iOS digital output universal compatibility with cameras, mobile devices and computers On-board recording over 40 hours of internal memory Safety channel, flexible gain control (three-stage pad, expandable to 10-stage)