... Headphone Jack High-Fidelity Magnetic Speakers Portable Music Cube Speaker,Mini Digital FM Radio Speaker For MP3,Micro SD/TF Card,Mobilephone,PC ... Response:150-18KHzLoud Speaker:3W; 4ΩSignal and noise ratio:≥80dBOutput: 3.7V*4.2VInput: 5.0V Portable Music Cube Speaker,Mini Digital ... FM Radio Speaker For MP3,Micro SD/TF Card,Mobilephone,PC