Acquisition Mode: 12-lead ECG simultaneous acquisition Display: 7 inches TFT LCD Storage: 20 Recording Format: 1, 1+1, 3, rhythm Recording Modes: Automatic / Manual Power Requirements: AC: 100-240V, 50/60Hz, 40VA ; DC: 12V rechargeable battery Safety Class: IEC Class I, type CF Printer: High resolution thermal array printer Recording paper: 63mm roll Dimension(LxWxH): 310mm x 230mm x 70mm