Boly Pro UHF Dual Wireless Cordless Microphone Mic System Free Shipping by ePacket (7 to 14 days) Handheld microphone use 2 PCS 1.5V AA battery Two Independent XLR Balanced Outputs & One 1/4" Unbalanced Mixed Audio Output Range: up to 240 Feets ( 80 meters ), Frequency: UHF 829.3MHz - 831.7MHz