| Color | Black |
| Brand | N/A |
| Model | N/A |
| Quantity | 1 Piece |
| Material | ABS |
| Compatible Models | HTC One (M8) |
| Battery Type | Li-ion battery |
| Nominal Capacity | 4200 mAh |
| Battery Actual Capacity | 3800 mAh |
| Capacity Range | 4001mAh~5000mAh |
| Input Voltage | 5 V |
| Output Current | 800 mA |
| Output Voltage | 5 V |
| Other Features | With ON/OFF switch; Stylish and portable; With stand for watching videos and playing games、 etc. |
| Packing List | 1 x Emergency charger back case 1 x Charging cable (95cm) |