... :3.7V/500MAH 3.Using for meeting,travelling,relaxing Portable Bluetooth Speaker Doss MINI DS-1168 Suitable for phone and tablet ... pc & computer1.Bluetooth version:V2.1+EDR(A2DP)2.Battery:3.7V/500MAH3 ... ,it can be used as power bank.6. SIG certified bluetooth V2.1+EDR7. Using for meeting,travelling,car kit,children ...