Portable Battery Base Compatible for Amazon Echo (2nd Generation) and Echo Plus(1st Generation),Battery Base Makes Them Portable,Not for Echo 3rd and Echo Plus (2nd Generation)
| Country | USA |
| Manufacturer | Dover Publications |
| Binding | Paperback |
| ItemPartNumber | 45ill. |
| Model | 45ill. |
| ReleaseDate | 1990-05-01 |
| UPCs | 800759263301 |
| EANs | 9780486263304 |