Introduction: A modern portable good digital electrocardiograph asset Features: Light in weight, compact in size 3 operation modes: Automatic, Manual, Analysis Automatic measurement and interpretation Detection and alarm for lead-off, no paper, no battery Built-in ECG simulator Built-in rechargeable lithium battery Automatic adjustment of baseline for optimal recording RS232 port to transmit ECG data Lead mode: Standard, or European Build-in help key: Trouble-shooting collections, etc. Clinical info such as patient ID, name, sex, age, height, weight, and hospital name can be input Case Storage: 15 cases, and extendable to 150 in a SD card. Saved ECG waveforms replaying, printing or being transmitted to PC.