Product description    Support AUX input socket for all kinds of device. BA-V10 circle product can play with bluetooth supported smart devices， MP3， DVD/CD player， Laptop， desktop pc and other devices connect with 3.5 mm connecting cable. // let time smart charging product- when lack of battery， LED light blinking and make sound by 1 minutes. in this case， connect usb charging cable on usb charging socket and charging it. /// Output power - 3W ， Power supply - USB 5V (Built in lithium lon betteries) ， Frequency Response - 120Hz ~20KHz ， Working range - up to 8 ~ 12M ， Product Size - 87 x 109x 37 mm(WxHXD) ， water proof function - IPX 4 ， Charging time - about 2~3H ， Talk/Music playtime - About 5~6 H