Features Simultaneously acquisition of 12-lead ECG data, IEC Class I, type CF safety standardSelectable four modes of leads: Manual (standard single channel), Auto I (standard three channel), Auto II (standard single channel plus any rhythm lead) and Auto III (European three channel)Function of ECG parameters measurement and distinguish point printing under Auto mode LCD display of operation menu, AMP menu and parameter settingPowerful filter for AC, EMG and DFT interferenceHigh resolution thermal printerAC and DC power supply, rechargeable built-in lithium battery, about 2 hours working timeHigh resolution and multiple print formats ensure best print quality of ECG waveformsCapability of input & output for analog signalRS232 interface ensure easy convey of ECGOption: Buit-in interpretation softwareUSB interface, ECG Software for net-working capacity