1. Portable 12 channel ECG machine 2. Multiple operation modes: Manual/Auto/Arrhythmia Analysis Modes 3. Alphabetic keyboard for patient information 4. Built in rechargeable Li-ion battery 5. Adapt 110-230V, 50/60Hz AC power supply 6. Real-time ECG waveform, 20 patients save/replay 7. Built in USB/RS232 interface(ECGNET software optional) 7KG/Carton, 20cmX33cmX39cm/Carton