1. Standard lead II. 2. Taking a measurement in 30s. 3. 2.8-inch TFT color display. 4. 9 kinds of measurement evaluation, can analyze 20 types of heart diseases. 5. The device can store up to 40 memories. 6. SD card can store up to 80000 memories. 7. Small size, lightweight and portable. 8. Humanized button, intelligent menu display.