Simplified List of Differences for ECG machines
| MODELS | ME03 | ME06 | ME12 |
| Height | 81mm | 81mm | 98mm |
| Width/Depth | 230mm | 230mm | 306mm |
| Length | 320mm | 320mm | 343mm |
| LCD screen | 7-inch | 7-inch | 10.2-inch |
| Serial port/External Input & Output(RS232 communication) | √ | √ | √ |
| LAN port | √ | √ | √ |
| USB port | √ | √ | √ |
| SD card port | × | × | √ |
| VGA output | × | × | × |
| Rechargeable Lithium Battery | 10.8V/2600mAh | 10.8V/2600mAh | 14.52V/5200mAh |
| Net weight： | 2.5KG | 2.5KG | 4.25 KG |