1,Portable speaker for ipod,mp3,mp4 2,High quality 3,Power:2*AAA battery 4,Do your own logo 5,Promotional gifts 1,Portable speaker for ipod,mp3,mp42,High quality3,Power:2*AAA battery4,Do your own logo5,Promotional gifts Mini speaker: for the ipod, mp3, mp4Power:2*AAA batteryOutput: 0.5W x 2Driver unit:0.5W 4ΩFrequence response: 120-18KHZ Dimension: 80*39*40mm Portable speaker for ipod,mp3,mp4