| | Power Banks: GB-3904B |
| Device type | External portable battery for charging mobile devices |
| Type of battery | Lithium Polymer |
| Battery Capacity (mAh) | 4500 |
| Input USB ports | 1 port microUSB |
| Output USB ports | 1 port USB-A |
| Input Current, Type-C | |
| Input Current, micro USB | 5V/1.0A |
| Output Current Type-C | |
| Output Current, USB-A | 5V/1.0A |
| Charge level indicator | 4 LED indicators |
| Cable Length, cm | USB - microUSB, 28cm |
| Charge time of battery, h | about 2.5 |
| Flashlight | |
| Wireless charger | |
| QuickCharge | |
| Touch Control Panel | |
| Additionally | Button to check the battery charge level |
| Сompatibility | Smartphones, Cell phones, Cameras and other devices that support charging via USB port |
| from recharge | yes |
| from deep discharge | yes |
| Short-circuit protection | yes |
| Case color | Black |
| Housing Material | Aluminum |
| Package Contents | Power Bank, Charging cable, Manual / Warranty card |
| EAN13: | 4892343100914 |
| Height, mm | 110 |
| Width, mm | 68 |
| Depth, mm | |
| Net weight, gr | 121 |
| Type of packaging | transparent box |
| Packing height, mm | |
| Packing width, mm | |
| Packing depth, mm | |
| Package gross weight, gr | |
| Quantity of consumer packages, pcs | 40 |
| ITF14: | |
| Height of the box, cm | 24 |
| Width of the box, cm | 20,3 |
| Box depth, cm | 23 |
| Box gross weight, kg | |
| Net weight of the box, kg | |