Here I recommend one from aHappyDeal Company, a professional company focus on this kind of product.
Brief Introduction of MN01 Fashional Audio Box Speaker Amplifier with USB and TF Slot
Main Feature: - Stylish speaker with clear alt and pure woof
- Can be used on any devices with 3.5mm audio port, like MP3, MP4, iPod, iPhone, GPS, PSP, Mobile, Notebook
- With an 3.5mm audio jack and TF card / mini slot
- Ideal for use at office, home, and anywhere you go
- New mini aluminum vibration film loud speaker,which has clear alt and pure woof and the design makes tone performance perfect
- With 3.5mm line in slot and TF card / micro plug slot
- Noble,fashionable and out of ordinary
- Output:RMS 6W(3W + 3W)=10%
- Frequency response:150-1800Hz
- Signal and noise ratio of power amplifier:>>80dB
- Loud speaker 1.77 inchs(external diameter 45mm)
... [Full description on aHappyDeal]
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