Features: 7 inch 480x680 color graphic LCD display Three channel ECG machine with interpretation 12-lead ECG simultaneous acquisition Multiple operation modes: Manual/Auto/Arrhythmia Analysis Modes 80mm 3-channel recording with a rhythm lead Digital filters eliminate EMG, AC, Baseline Drift interference Built in rechargeable Li-Ion battery, 3 hours continuous working Adapt 110-240V, 50/60Hz AC power supply 250 patients save/replay Built in USB/RS232 interface