| Model: | RB-M39mini |
| Bluetooth version: | 5.0 |
| Support protocol: | A2DP/HFP/HSP/AVRCP/SPP |
| Transmission distance: | ≦ 10 meter |
| Rated power: | 3 watt |
| Frequency response: | 150Hz - 20kHz |
| Impedance: | 4 Ω |
| Standy time: | 7 day |
| Play time: | 6 hour (50% volume) |
| Battery capacity: | 350mAh |
| Charging time: | 2-2.5 hour |