XTUGA RW2090 Professional Stage Wireless 2 Channel In Ear Monitoring System 4 in 1 1. RW2090 come with UHF band Phase lock Pll, Statics free and delay free, Among the band of 32MHz, the preset 2 x 100 frequencies can be arbitrary switching. 2. Built-in Limiter circuitry eliminating distortion under excessive input levels. Front panel 14 inch stereo monitoring has the headphone jack. Used in stage, it can replace traditional complies sound monitoring. 3. More features in Iem monitoring: The wireless transmitter and receiver can pairing automatically. USB dish connection, Bluetooth connection function, Mute function, support play the performance accompaniment. The Iem system works perfectly in various sound-monitoring events, stage performance, studio recording, exhibit, lecture, instruction, speech, etc. 4. RW2090 offers tabletop stage monitoring and enables users to move freely on the stage and in the studio with a coverage of 230ft(70m). The frequency rang is 550.1MHz-599.95Mhz. LCD panel provide system details, including channel, group number and RF indicator. 5. Auto pairing: The wireless transmitter and receiver can pairing automatically, no need to manually tune the channel. 6. Packing include: Transmitter x1, Bodypack Receiver x4, Antenna x2, Earphone x4, 6.35mm Lines x4, Power Adapter x1, User Manual x1. 7. Receiver power supply: 2 x AA batteries (not included)