1, Hand-Held Single Channel ECG 2, High precision 3, CE & ISO certificate 4, Easy carry and easy use Technical ... Parameters 1, Input circuit : Floating2, Calibrating Voltage :1mV ?%3, Input current :<100nA4, CMRR :>103dB5, A/D :12bit6, Frequency ... :?5Vp-p11, Safety standard :IEC class I, type CF12, Lead selection :Automatic and Manual13, Operation mode :Automatic and Manual14, Display ...