Features: Wireless Handheld Microphone System Single Channel Design USB Powered Microphone Receiver Base Simple Setup & Hassle-Free Operation Compact Tabletop Receiver Design Adjustable Volume Control Convenient Desktop Fold-out Stand Microphone with Digital LCD Display Integrated Low Noise Circuitry Lab Tested Distortion-Free Audio Performance Extended Wireless Range with Crisp Vocal Pickup 1/4'' Unbalanced Audio Output Jack AF and RF Audio Signal Indicators Power ON/OFF Control Used for Home, Office & Business Use What's in the Box: Microphone Receiver Base Wireless Handheld Microphone USB Cable (2) ‘AA' Batteries Technical Specs: Wireless Mic System Type: UHF (Ultra High Frequency) Band Wireless Operation Range: Up to 165' ft. Mic Element/Type: Dynamic Pickup/Polar Pattern: Uni-Directional Image & Spurious Rejection: >70 dB Audio Output Level: +/- 300 mV Output Impedance: 600 Ohm Frequency Stability: +/- 0. 005% T. H. D: 0. 03% Sensitivity: -96dBm Construction Material: Engineered ABS Housing Battery Operated Mic, Requires (2) x 'AA' Batteries, Included Power Consumption: USB Interface: Micro USB Receiver Power Supply: USB, DC 5V Mic Dimensions (L x W x H): 9. 84'' x 2. 03'' x 2. 03'' -inches Receiver Base Dimensions (L x W x H): 7. 09'' x 4. 33'' x 1. 97'' -inches