Features 1. Our Prince-180A portable ECG monitor is easy to operate. 2. It uses a monochrome LCD display with switchable backlight. 3. It performs rapid ECG and HR measurement by recording a 30 second ECG waveform. 4. The portable ECG monitor has analysis function and can report 9 types of suggestive results. 5. It offers memory storage capacity of up to 24 records for review. 6. The ECG monitor will automatically power off in 35 seconds if no signal is detected. 7. It uses 2xAAA alkaline batteries power supply with low voltage indication. 8. Optional PC data management software for data transmission and analysis is available.