Feature: 1. DUAL ANTENNA: Wireless microphone adapter has built in dual antennas to resist electromagnetic waves such as WiFi for better interference and longer transmission distance. 2. COMPATIBLE DEVICES: Wireless microphone transmitter is compatible with a wide range of devices, such as trolley stereos, portable stereos, desktop speakers, mixers, home theater system equipment, etc. 3. CLEAR LCD SCREEN: Wireless microphone transmitter receiver displays the frequency band and power in real time, so you can pay attention to the power in time, plug and play, more convenient to use. 4. UPGRADE MATERIAL: Wireless microphone XLR transmitter is made of upgraded material, hard and strong, with a straight body for a more comfortable grip. Choice of many musicians. 5. UNIQUE DESIGN: Wireless microphone transmitter receiver is designed with a blue backlit power on off button to highlight the on off condition of the machine and prevent forgetting to turn it off. Specification: Item Type: Wireless Microphone Adapter Material: ABS Tuning Bandwidth: 470-960 MHz Operating Range: Up to 90 Feet (Actual Range Depends on RF Signal Absorption, Reflection and Interference) Sound Frequency Response: 20Hz-20KHz (-3dB) (Depending on Microphone Type or Input Signal) Dynamic Range: 110 dB Rf Sensitivity: -88 dBm Total Harmonic Distortion: 0.2% Battery Type: 2 x Built in 680 Mah Lithium Ion Battery. Package List: 1 x Transmitter1 x Receiver2 x Adapter2 x Data Cable1 x English Instructions