This wireless microphone system adopts advanced VHF anti-jamming chip, which can effectively shield noise, prevent howling and restore good sound quality. Cardioid directional pickup, which can be aimed at the main for pickup even in a noisy environment, ensuring clear vocals. The body is designed with mirrored elements, showing the combination of technology . And it is easy and simple to use with automatic frequency pairing when powering on. This wireless microphone system is equipped with two antennas for more stable signal reception and strong anti-interference ability. The signal coverage is wide, and the effective operating distance in open space can reach 80 meters. Moreover, the antenna can be retracted freely without taking up space, which is convenient for storage and carrying. This product is equipped with a low-power microphone, and the battery life is improved, up to 8 hours of battery life(Battery not included). Suitable for a variety of scenarios, such as: family karaoke, conference speeches, wedding hosting, etc. Operating Range: 80 Meters Channel: Two Channel Frequency Range: 210MHz - 270MHz Frequency Response: 40Hz-18KHz S.: 103dB (1KHz-A) Operating Temp: 14F - 122F Oscillation Mode: Quartz Crystal Frequency Stability: 0.005% Modulation Mode: VHF Harmonic Radiation :Less than 63dBm RF Output Power: 10mW Receiver: Sensitivity: (S=30dB) 2mV Audio Output Impedance: 600O Audio Output Level.: 0-0.5V Power Supply: AC110V 60Hz Current Consumption: =50mA Audio Out Connector: 1/4inch unbalanced Transmitter: Frequency Stability: 0.005% RF Output Power: =10mW Modulation Mode: VHF Maximum Deviation Range: 50KHz Microphone Mode: Fixed Power Supply: AA/1.5Vx2 Current Consumption: =35mA Single microphone does not include 2 AA batteries Plug Type: US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the , the Philippines and so on. Voltage: AC110V Colour:black Material:ABS Package Contents: 1 x Receiver 4 x Handheld Microphone 1 Cord 1 x Audio Cable Only the above package content, other products are not included. 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.