1、Wireless IEM System: Digital wireless IEM system is more stable than traditional analog systems. suitable for stage performance and live broadcast. Users can enjoy the full, dynamic, crystal clear, and immersive stereo sound quality. 2、Stereo Transmitter: The transmitter has 2 combo input jacks and 1 jack, allowing for easy connection to various input signal devices. Digital wireless IEM system offers better sound quality than traditional analog systems. 3、36 Selectable Frequencies and Digital Wireless Technology: Equipped with 36 selectable frequencies and digital wireless technology, the system is more stable and offers better interference resistance. 4、Long Working Range and Clear Sound Quality: Indoor working range up to 50 meters, outdoor up to 100 meters, with total harmonic distortion below 0.2% for clear sound quality. 5、Wide Applications: Wireless IEM system has a stronger and more stable signal, good anti interference and original sound reproduction. Good used in stage, broadcast, recording studio, musicians, band performance. Item Type: Wireless IEM System Material: Steel Casing Frequency Range: 560-596MHz Channels: 36 Frequencies Available Headphone Output: 3.5mm Jack Transmitter Power Supply: 9V-12VDC 300mA Receiver Working Time: 10 Hours Operating Range: Indoor 50m / 164ft, Outdoor 100m / 328.1ft RF Output Power: 10mW Signal to Noise Ratio: 80dBA Total Harmonic Distortion: <0.2% (1 kHz, +4dBu input) Frequency Response: 20 Hz-20 K Hz Receiver Battery: 2 AA Batteries (Not Included) 1 x Transmitter 1 x Receiver 1 x Earphone 2 Pairs x Ear Tips 1 x Adapter 1 x User Manual 1 x Antenna