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| Model | D21 |
| Material | ABS+PC+布网 |
| Bluetooth Version | v5.0 |
| Capacity | 1800mAh |
| Charging Way | micro USB |
| Time For Charging | 3-4HRS |
| Average Battery Life | 120HRS |
| Power | 5W |
| Impedance | 4Ω |
| Frequency Range | 80hz-18khz |
| Color | white |
| Product Weight | 823.5g |
| Product Size | 420*65*70mm |
| Packed Weight | 1250g |
| Packed Size | 447*95*83mm |
| PCS/CTN | 20pcs |
| Carton Size | 495*460*352mm |
| G.W. | 26.3kgs |
| Certifications | CE/FCC/RHOS |
