mini speaeker

1, square design, sleek, elegant, portable, energy-saving design, long life 2, suitable for CD, DVD, computer, notebook computer, MP3, MP4, mobile phone, IPOD and other product design. 3, output power: RMS 4w (2W +2 W). 4, Frequency Range :100-18K (Hz) (± 3dB). 5, Speaker: diameter 32mm, impedance: 4Ω. 6, audio input: 3.5mm audio header interfaces. 7, power supply: USB-5V power supply, which with lithium 3.7V/300mA. 8, Power: DC5.0V; 9, weight: 0.18KG/pcs. 10, product size: 115 * 27 * 50mm. 11, Packing: plastic bags and box packaging. 12, Color: many colors available.