... Single Channel ECG Name:ECGFeatures:^Large LCD display waveform and data^ High-resolution thermal printing array system^ Capable of printing continuously on channel ... Standard IEC class I, type CF Power Supply AC: 220V / 110V, 50/60Hz Power Supply DC: 12V rechargeable battery Skin ... Cable, Thermal Printing Paper, Limb Electrodes, Chest Electrodes, Power Supply Cable, Grounding Wire phone:86-10-82958705