Upgrade V4.1 Bluetooth Headphones Wireless Neckband Headset Retractable Earbuds Sports Sweatproof HD Stereo Noise Cancelling Earphone w/Mic for Iphone and Android Cellphones (Black)
| Country | USA |
| Brand | Golden Books |
| Manufacturer | Golden Books |
| Binding | Paperback |
| ReleaseDate | 2011-01-11 |
| EANs | 9780375865954 |