High Definition Audio Surround Sound Portable Muzic Box Bluetooth Wireless Amplifier Purple Color Stereo Phone Speaker With Up to 15 Hours Playtime (Purple) Magical sound amplification function for most mobile phones. Support most IOS devices and Android system. No WIFI or Bluetooth connection and pairing needed. Included : 1 X 3.5mm audio cable and 1 X Micro USB charging cable. Just place your handset on top of box and enjoy your sound amplified for speaker calls or stream your music. High quality 360 degree surround sound. , powerful high-definition sound with enhanced super bass, deliver a full range listening experience. Power Output: RMS 2W*2 Impedance: 4 ohm Frequency Range: 20hz- 20KHz. High Efficiency: Up to 15 hours of play time with 3 x AA batteries.