Anchor Audio MEGA-7500U1 MegaVox Pro Powered PA Speaker with 1 Wireless Receiver High output portable handheld or stand mountable speaker with 22 Watts of amplification and high efficiency re-entrant horn driver Built-in 16-channel UHF diversity receiver Rugged, durable injection-molded case Dynamic handheld microphone with coiled cable Built-in rechargeable battery with 10 hour battery life, true AC/DC multi-voltage switchable power supply