... 2.3.5mm audio plug ,connects to Ipod 1. Mini USB speaker ,Work with all sound source with 3.5 audio interface ... : MP3 ,Computer ,mobile phone ,CD player etc, Protable mini boom speaker- Teeny Tweakers -Tiny pocket size with room filling sound2.3 ... audio devices4.built-in lithium polymer battery ,recharge through standard USB port 5.Vacuum Bass,360 Degree Sound filed6.LED indicate ...