Fangrui Product Details The Wireless Microphone Transmitter Receiver System Comes With A Wired To Wireless Adapter Suitable For Condenser And Dynamic Microphones. It Operates On 5v Or 48v Universal Power, Making It Versatile And Convenient For Various Microphone Setups. This Product Is Suitable For Use In Situations Where External Sound Is Required This Product Adopts Highly Integrated Chip Design And Id Code Matching Authentication. Frequency Range Frequency Range: 500-980mhz Adjustable Channel 16 Frequency Adjustable Points Channel Spacing: 0.5-2.5hz Modulation Mode: Dopsk Dopsk Frequency Stability: 3ppm Frequency Response: 3ppm 40hz-20khz Working Range: 50-80 Meters Working Voltage: Built-in 3.7v, 1000mah Lithium Battery, Use Time 6-8 Hours This Product Uses A Converter And Can Be Used With Devices Such As Speakers, Power Amplifiers, Mixers, Or Guitars. Color: Black Material: Abs Package Contents: 1 X Transmitter 1 X Receiver 1 X Charging Cable 2 X Adapters 1 X English Instruction Manual Only The Above Package Content,