... MMC CARD.Built-in dual channels UHF wireless microphone receiver portable PA amplifierMade of good quality ABS plastic material,with stronger ... mounting.Wired/Wireless Microphone --Amplifier.Ideal for just about any PA application, including schools, seminars, conferences, worship centers, exhibitions, aerobics, ... 521*318*249mm11.Weight: 13.8kgs12.Exterior Color: Black A788 portable PA amplifier