... disclosure, no data compression, 3-channel ECGStorage: SD flash card (1GB)LCD display: ECG waveform and lead numberDimension: 68mmx53mmx16mmWeight ... size batteryData transfer: Through USB cable or SD card reader 12-Channel Holter Recorders Model: CV-4LFeatures:Completely compatible ... hours, full disclosure, no data compression, 12-lead ECGStorage: SD flash card (1GB)LCD display: ECG waveform and lead ...