Pyle Pro Audio Microphone System Handheld Wireless Mic & Receiver Adapter UHF Narrow Band Audio Transmitter Portable Battery-Operated Design Mic Adapter with Built-in Rechargeable Battery Digital Display with Selectable Mic Frequency Integrated Antenna for Extended Wireless Range Simple Plug-and-Play Operation Includes Plug-in Audio Adapter Receiver Audio Receiver with 1/4 -inch (6.3mm) Jack Built-in Acoustic Pop Filter Integrated Low Noise Circuitry Ultra-Wide Frequency Response Noise-Eliminating SMT Technology Crisp Audio Clarity for Vocals & Singing LED Indicator Light Power ON/OFF Switch Rugged & Durable Mic Construction with Steel Mesh Grill Perfect for Professional Audio Stage & Studio Performances Directly Connects to Amplifiers Stereos Audio Processors DJ Mixers Used for Home Karaoke Classroom Office & Business Applications.