... domain 3-Channel Holter RecordersModel:CV-3LFeatures:Completely compatible with Del Mar, DMS CardioScan, Century 3000 3 ... 68mmx53mmx16mm Weight: 42 grams (battery not included) Lead: 5 wire patient cable (any 3 leads in V1~V6) ... II, III, aVR, aVL, aVF, V1~V6), 5 wire patient cable (any 3 leads in V1~V6) Power ... transfer: SD card reader Porable holter System Cardiology with CE and ISO13485 certificate