Technical Specifications��oAudio port:TF/USB/AUXSpeaker:Double speakers 4|?3W|��40mmFM Frequency Range:87.5-108MHzFrequency Response:100Hz-16KHzBattery:3.7V 1800mAh lithium batteryPlayback time:up to 6 hoursCharging time:2.5-3.5 hoursCharging interface:Micro-USBInput voltage:DC5V-500mAhDimension:220?��70?��45mmPackage includes:1 x bluetooth speaker，1 X USB Cable