Little fairy portable bluetooth speakers a-100 for iphone/ipod/iphone/smartphones, wireless bluetooth speakers, mini bluetooth speakers, bluetooth speakers portable 1.Bluetooth version: v2.1+edr(a2dp bluetooth profile) 2.Bluetooth transmission distance: 10 meters (transmission distance will be different by environmental reasons or the quality of mobile phone bluetooth devices) 3.Speaker size: 45mm 4.Output power: 3w 5.Usb charging voltage: dc 5v 6.Built-in lithium battery voltage: 3.7v/750mah 7.Working time: 4 hours(regular voice) 8)frequency range¡êo120hz-8khz
