Edan SE-601B ECG is a lightweight, compact design that is suitable for mobile use within a limited space. It has common data input and process, making it simple to use for all. The keyboard is alphanumeric and works with a single click. It has an AC / DC power supply and a built-in rechargeable Li-ion battery. A two-step exercise test with periodic recording is included in the periodic recording, as well as heart rate variability analysis. 5.7 inch TFT LCD backlight screen, 12 leads standard, 2200mAh rechargeable Li-ion battery.