Pyle Model: PDWM2135 2-Ch. VHF Wireless Microphone System VHF Fixed Frequency Wireless Microphone System, Adjustable Volume Controls, Includes (2) Handheld Mics System Features: VHF Narrow Band Receiver System Dual Frequency Design (Channel A/B) High Signal/Noise Ratio Performance Broad Frequency Response Range & Low Distortion Independent Adjustable Volume Control Dual Independent Channel Antennas RF Signal and AF Signal LED Indicators Radio Frequency and Audio Frequency What's in the Box: Receiver Base (2) Wireless Handheld Microphones Handheld Microphones: RF Power Output: >13dBm Modulation Degree: >30KHz Power Current: Harmonic at Higher Degree: Modulation Pattern: FM Battery Powered, Require (2) x 'AA' Batteries -Each System Receiver: Sensitivity: -95dBm (S/N: 12dB) RF Image Rejection: -75dB Audio Dynamic Range: 95dB T. H. D. : S/N Ratio: >70dB Neighboring Channel / Interference: >70dB Power Supply: AC 120V, 60Hz Receiver Dimensions (L x W x H): 8. 07'' x 5. 75'' x 1. 64'' -inches The Pyle PDWM2135 delivers clear, noise-free wireless transmission and excellent sound reproduction. Simple setup and installation allow you to transmit clear sound instantly. System features include (2) handheld microphones, VHF narrowband system, dual frequency design, high signal to noise ratio performance and more. Enjoy dual channel voice distribution across the handheld microphones. Whether used for work or play, for on-stage vocal performances or conference room speeches, this wireless microphone system will provide you with a quality audio experience. Enjoy hassle-free and reliable wireless sound transmission with today's latest system technology with this all-in-one package.