... SD jack 2.Built-in recharge battery 3.High sensitive wireless microphone Portable speaker PK-15MBuilt-in DVD player,can ... ,MP4discUSB connector Description : It was designed with versatility in mind:Multi-media supported ,compact ,portable ,clear and loud sound reproduction , ... ,MP3,MP48.Built-in advanced receiver modular system with two wireless mics (handheld ,lavalier ,and clip type optional )2-3 ...