... Li-battery SD/TF & USB Card Reader Speaker With FM Radio TL3021. SD/TF reader and USB reader-MP3 audio capable2. AUX input allows ... . Built-in effective digital amplifier, sound more pure and perfect 10. With stand/feet, when opening battery cover, it can be ... : TV Tuners, HD Media Players, Digital Photo Frame, Security DVRS, Mini Speakers, Webcams etc.OEM/ODM Service: Solution design, software, and ...