| Color | White |
| Model | R539 |
| Material | ABS+PC |
| Quantity | 1 Piece |
| Shade Of Color | White |
| Ear Coupling | In-Ear |
| Bluetooth Version | Others、V4.1 |
| Operating Range | 10M |
| Radio Tuner | No |
| Microphone | Yes |
| Supports Music | Yes |
| Connects Two Phones Simultaneously | Yes |
| Applicable Products | Universal |
| Built-in Battery Capacity | 70 mAh |
| Battery Type | Li-polymer battery |
| Talk Time | 4 Hour |
| Music Play Time | 3.5 |
| Standby Time | 100 Hour |
| Power Adapter | USB |
| Power Supply | 5V |
| Packing List | 1 x BT Earphone 1 x Cable(30CM) 1 x Chinese User manual 1 x Ear cap |