For ANLEON S2 UHF Stereo Wireless Monitor System in Ear System 670-680MHZ Wireless in ear monitors allow for uncluttered stage sets and a reliably consistent sound wherever you move. Ideal for use by singers and musicians, this in ear monitor system for bands features an adjustable TNC antenna to extend and increase wireless range plus a clear digital LCD front panel display for at-a-glance monitoring. Features: 1. Adds wireless audio connectivity to any active loudspeaker 2. Connect your audio source to the receiver and it sends the signal to your receivers 3. No compromise in audio quality; Send audio in high-fidelity stereo or mono (system selectable) 4. Adjustable squelch eliminates interference 5. Perfect for multi-room venues, weddings, mobile DJ's, tricky floor monitor placement and mobile A/V Transmitter Design: For Front panel of S2 transmitter VOLUME knob adjusts the sound output of the transmitter headphone For S2 transmitter rear panel Power button turns the power on and off Receiver Design: LCD screen: display frequency, channel and battery level Antenna: Receives RF signals from the transmitter Power indicator: Green indicates that the battery is working properly Headphone jack Power and volume knob Frequency adjustment button Battery compartment Specification: Condition: Material: Metal + ABS Color: Black Model: For ANLEON S2 Wireless Monitoring System (670-680mhz) Size: Approx. 155 * 120 * 40 mm / 6.1 * 4.7 * 1.5 inch Receiver Battery: 2*AA (NOT INCLUDED) Product Name: For ANLEON S2 Wireless Monitoring System (670-680MHZ) (without battery delivery) Product Weight: Approx. 483 g (Transmitter), 95 g (Receiver) Technical Parameters Frequency Response: 20Hz~18KHz Antenna: 1/4 wavelength Transmitter Power Supply: DC9V / 300mA Transmitter built-in audio limiter Transmitter RF Output Power: 10 mW Receiver Standby Time: greater than 12 hours (using 1.5V 2*AA battery) (without battery delivery) Use Distance: Indoor 50 meters, Outdoor more than 100 meters Package List: 1 x Transmitter<br style="white-space:normal;"> 1 x Receiver<br style="white-space:normal;"> 1 x Headphone<br style="white-space:normal;"> 1 x Power Adapter<br style="white-space:normal;"> 4 x Earbud Cap Note: 1. Please allow 1-3 cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 3. Excessive use of this system may lead to permanent hearing damage, using low volume as much as possible. 4. If you do not use this product for a long time, remove the battery.5.&nbsp;Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.