You can connect it to your smartphones and tablets and enjoy up to 6-8 hours of playtime. UBON wireless speaker is powered by a 1800mAh rechargeable Li-ion battery that offers up to 6 to 8 hours of continuous playtime -Wireless , Battery-3.7 V 1800 mAh Lithium Battery , FM Radio , TF player/SD card Slot`1 -6-8 Hour Backup and Charging time- 1 hour-2 hour -Distance - 10 meters ,Compatible With FM,Aux,Pen Drive,SD Card Slot -USB Chargeable , 100Hz-20KHz , Android ,IOS/Apple ,PC/Laptop