Specifications:
• Number of speakers: 2 micro-Titanium drivers housed in a single speaker unit.
• Loud speaker: 1.5 inch (External Diameter 40mm) Magnetic Resistant 4ohms
• Speakers Rated Power:4W(2W+2W) 2W RMS per channel (2-channels)  THD=10% (in RMS with wide stereo effect)
• Frequency Response: 150Hz to 18kHz (+-3dB)
• Signal and Noise Ratio of Power Amplifier >=60dB
• Connectors: 3.5mm Audio Line-In.
• Power Source: USB cable, 4xAA size batteries or DC Adapter
• Dimensions(H x W x D): 186mm x 48mm x 45mm
• Power supply: DC 6V/9V/1000mA
• Weight:6.17oz

Compatibility:
• Any sound source via 3.5mm audio line-in cable such as iPod shuffle MP3 Player, Laptop, Portable DVD player

Included:
• ONE Portable Speaker
• USB Power Cable
• 3.5mm Jack Analog Audio Stereo Cable