... USB interface^Multiform printing modes and format: Auto/Manual, standard 12 Ch, 3Ch+3R,6Ch,6Ch+1R and 60s arrhythmia report.^Physical ... SD CardSpecifications:^Input way: Floating and defibrilation protection^Lead: Standard 12 leads^Input impedance: ≥50ΜΩ ^Frequency response: 0.05Hz~150Hz(- ... (W)*85mm(H)Options:^ECG Workstation Software^SD Card^Portable Pack^Trolley^7'' LCD B/W, Color, Touch phone:86- ...