SleepPhones AcousticSheep Wireless | Bluetooth Headphones for Sleep, Travel, and More | The Original and Most Comfortable Headphones for Sleeping | Pitch Black - Breeze Fabric (Size M)
| Country | USA |
| Manufacturer | The National Library of Singapore |
| Binding | Paperback |
| ItemPartNumber | NARF_23917 |
| EANs | 9789811464942 |
| ReleaseDate | 0000-00-00 |