Lightweight pocket transmitter, includes rugged guitar cable, up to 15 compatible channels (in optimal conditions) on the license-free 2.4 GHz band, automatic frequency management, avoids interference - smart channel backup allows coexistence with Wi-Fi and Bluetooth, audio effects: Equalizer, De-esser, Automatic Gain Control, iOS app for remote control and system monitoring. robust metal case, includes EM-D1 receiver, SK-D1 bodypack transmitter, CI 1 Jack cable, NT-12 power supply, carrying case and user manual.