Specifications: 

• The Professional Speaker is provided with high quality tone 
• The high-effect USB Speaker is designed with low power consumption and energy saving
• This USB Speaker features excellent sound quality
• A perfect solution to projecting audio signals when headphones just aren't enough
• This USB Speaker is easy to operate and carry
• Lightweight design folds into a compact unit for easy portability 
• Output Power: RMS 3W x 2(THT=10%, f=1KHz)
• Power Source: DC 5V, 500mA
• Sensibility: 80db±2db
• Frequency Response: 100Hz-20KHz
• SNR: ≥80dBA
• Distortion Factor: ≤0.3%
• Speaker Impedance: 4ohm
• Input Interface: 3.5 
• Material: Plastic
• Size: 10.0 x 6.0 x 2.5cm/3.9 x 2.4 x 1.0in(L x W x T)

Details:

• A perfect solution to projecting audio signals when headphones just aren't enough

• With the portable USB port speaker you will enjoy the endless joy

• This USB speaker is easy to operate and convenient to carry

Package Included:

• 1 x Speaker
• 1 x USB Power Wire
• 1 x Audio Conversion Line
• 1 x Charger