... DVD,mp3 player. 2.Wireless mic 3.Speaker: 15"woofer,horn tweeter 4.RMS power: 300W pa system TV-15DBuilt-in MP3 ... Dual channels UHF or VHF fix frequency wireless system optional (UHF have 50 to 70 wireless transmission distance,VHF have 20 to 30 ... memory card,MP3,MP47.Built-in advanced receiver modular system with two wireless mics (handheld ,lavalier ,and clip type optional )2 wired ...