... time domain, frequency domain and non-linear HRV analysis PC working base PC ECG system, ECG recorderCE markedPerfect time domain, frequency ... battery not included) Lead: 10 wire patient cable (I, II, III, aVR, aVL, aVF, V1~V6) Power: 2 AA size batteryFunction ... (8 functions):ECG: 12-lead resting PC-ECG with auto interpretation VCG: Vector-cardiograph with auto interpretation ...