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MP3 Player Portable Speaker V-3
1. Compatible with MP3 / MP4 player, Laptop, PC and other A/V devices.
2. Build-in analogic amplifier.
3. Frequency Range: 160Hz-20KHz
4. Input Sensitivity: 200m V
5. Impedance: 4 Ω
6. power supply: DC 2.5V~6V