This 12-15 channel interpretive ECG follows the international standard for digital electrocardiographs regarding digital filter performance and accuracy. It's TFT LCD screen, which measures at 12.1 inches, is on a swivel arm. It has the ability to store 12 lead waveforms for up to five minutes. Data is easily transferrable to a personal computer using an SD card, LAN, or wireless LAN. The machine can store 10 seconds of 12 lead EGC wave and information for up to 400 patients. With the use of an SD card, the number of patients can reach upwards of 3,000.