| Brand | Rock |
| Bluetooth frequency range | 22.402-2.480GHZ |
| Model | RAU0521 |
| Bluetooth version | 4.0 |
| Bluetooth chip | CSR8606 |
| Product name | ROCK muca |
| Color | White/ Black |
| Mic Spec | 4015-42±2dB |
| Battery | 3.7V 35mAh |
| Standby time | 45-60h |
| Talk time | 3.5-4h |
| Music time | 2-3h |
| Charging time | 1.5-3h |
| Car charger output | 5V 2.1A |