... 2.1+EDR Mini Bluetooth Speaker for Mobile Phones,MP3,MP4,PSP,Laptop,Desktop X3 X3 Product Features1, Comply with Bluetooth 2.1+ ... Response :100Hz-20KHzLoudspeaker Output :3WSignal-To-Noise :≥75dBDistortion :≤1.0% Playback Time :8 ~10 hoursCharging Time :3 to 4 hours Dimension (L ... 1x User Manual 1x Hand rope Details show: x3 bluetooth mini wireless speaker for Mobile Phones,MP3,MP4,PSP,Laptop,Desktop ...