Features:
The speakers provides shock bass, stereo sound effect.
Dual speaker can restore the natural sound quality, interpretation of real stereo surround sound.
Small size and simple design, not occupy desktop space.
Humanized volume adjustment roller, easy to control volume, convenient to use.
Widely compatible with laptop, desktop computer, mobile phone, tablet with 3.5mm audio interface.

Specification:
Type: Computer speaker
Speaker unit: 2W*2
Output power: 2.5W+2.5W
S/N ratio: 65dB
Impedance: 4Ω
Power: USB 5V 
Single speaker size: 17.7 * 9.2 * 8cm /6.97 * 3.62 * 3.15in
Item weight: Approx. 621g /21.91oz

Packing list:
1 * Pair of speaker