<p>1. DIGITAL DISPLAY: IEM system receiver is equipped with an LCD screen that displays frequency, channel and battery level for easy operation.</p> <p>2. EFFICIENT RECEPTION: Wireless IEM system receiver uses 670-680Mhz frequency band, which is to receive signals from the transmitter.</p> <p>3. STABLE SIGNAL: Wireless monitor system receiver antenna adopts 1\/4 wavelength design to enhance signal reception.</p> <p>4. EASY TO CARRY: IEM receiver runs on 2 x AA 1.5V batteries, and portable, and can be used up to 50 meters indoors and over 100 meters outdoors.</p> <p>5. CLEAR SOUND: Stereo IEM system receiver frequency response covers 20Hz to 18KHz, providing a clear, HiFi sound experience.</p> <p>Item Type:Wireless Monitor System Receiver</p> <p>Battery:2 x AA 1.5V Batteries (Shipped Without Batteries)</p> <p>Use Distance:Indoor 50 Meters, Outdoor More Than 100 Meters</p> <p>Frequency Response:20Hz to 18KHz</p> <p>Antenna:1\/4 Wavelength</p> <p>Frequency Band:670-680Mhz</p> <p>Color:Black</p> <p>Material:Plastic</p> <p>Package Contents:</p> <p>1 x Receiver</p> <p>1 x Headphones</p> <p>2 Pairs x Ear</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>