... .supports ipads,iphone,sumsung , 3.built-in lithium battery Wireless bluetooth speaker,mini,portableSpecification* Power: 3W * Signal To Noise Ratio: >80dB* ... max* Last Time: 2-4hours (via bluetooth to play)* Driver Unit: 56mm, 4 Ohm ,3W*Dimension:(D)65MM*(H)50MM ... LTD mainly manufactures multimedia speakers, including mini speakers, 2.0 speakers,2.1 speakers,card speakers and bluetooth speakers.We have ...