Feature:

    Dual channel
    Working time: more than 10 hours (depends on battery)
    Output: 1W + 1W
    3.5mm standard connector
    2 speakers: 28mm in diameter
    Frequency range: 200Hz - 20kHz
    Net weight: 40g or 1.41oz
    Size: 80 x 80 x 30 mm (3.35 x 3.35 x 1.18 in)
    Impedance: 8ohm
    Powered by 2 AAA 3V batteries (not included)

Compatible with:  for iPhone，   for iPod， for Nano， MP3， MP4， etc.all devices with 3.5mm connector

Package includes:
 1x Mini Monaural Speaker