... lithium battery wireless portable bluetooth speaker ,mini for mobile/mp3/mp4,aluminum Specification* Power: 3W * Signal ... Last Time: 2-4hours (via bluetooth to play)* Driver Unit: 56mm, 4 Ohm ,3W*Dimension:(D)65MM ... 5 audio interface product like : MP3 ,Computer ,mobile phone ,CD player etc*From a range of ... from any Bluetooth-enabled device such as your mobile phone, notebook, iPhone or iPad. *With ...