... call ,redial the last received call,Line inSelling point:Bluetooth speaker1.Portable Bluetooth Speaker2.Bluetooth wireless technology3.Support Smart phone and laptop with ... ,OBEX,SPP,A2DP, AVRCP,FTP ,HS/HF,DUN Profilesplay time4 hoursRMS power2X2WSNR60dbworking voltage3.3-4.2Vcharge voltage5V+0.5VUnit dimension170x70x44mm Bluetooth Speaker ...