| Item | ES421 |
| Print Size(inch) | 2 |
| Print Resoution(dpi) | 203 |
| Maximum Print Speed(mm/s) | 60 |
| RAM | 1MB |
| Flash | 64K |
| Connection | USB Bluetooth Typ-C |
| Printer Driver | WIN 7/8/10/XP |
| Packaged Size(mm) | 47x36.5x26.8 |
| Dual Type | Thermal receipt paper |
| App Control | × |
| Metal Cutter | √ |
| Supported Languages | English, Chinese |
| Printer Types | Thermal Printing Machine |
