Specification for wireless portable speaker:

bluetooth specification: V4.0+EDR

connection:  bluetooth/AUX/TF card

operation range:    up to 10 meters

frequency response: 60hz-20khz

music formats:    MP3/WMA/AMR/FLAC/APE/Vorbis etc

singl to noise:     mobile phones,tablet,pc,laptop,desklop etc

bulit-in rechargeable(lithium-polymer):   900mAh battery

material: ABS

charge time:   1 hour

function: hands-free,music play,audio line-in

playing time:   4 Hours

dimension: 89*89*107mm

built-in microphone: yes

signal to noise ratio: >=85dB

output rate: 5w  

speciful function: hand free call