Features: High resolution thermal printing system, high precision 12 leads collection in phase as well as 3 leads printing in phase Digital design and filter, baseline auto-adjustable LCD displays operation menu Power Supply: AC/DC, built-in rechargeable lithium battery Automatic measurement, analysisand diagnosis with high speed Elegant and compact outlook, with inner handhold. Supplied with Disposable electrodes   Specifications: MODEL: ECG 300G ECG Input Circuit Floating; protection against defibrillator effect. Lead Standard 12 leads Display 3.5” TFT screen Patient Current Leakage 10µA Sampling Rate 1000Hz A/D conversion 12 bit Frequency Response 0.05Hz~150Hz (-3dB 0.4dB) Time constant: >3.2 seconds CMRR >60dB >100dB (Add Filter) Enduring polarization voltage ±500mV Noise Level <15µVp-p Measurement parameters EMG Interference Filter –  25Hz/35Hz (-3dB) AC filter 50Hz/60Hz (≥20dB) Recording way Thermal printing system (32spots/mm) Recording paper 80mm(W) x 20mm (L) Sensitivity choice 5,10,20,40mm/mV, Auto Wave Output Auto-Record Rhythm Record Manual record 25mm/s, 50mm/s25mm/s, 50mm/s 5mm/s, 6.25mm/s, 10mm/s, 12.5mm/s, 25mm/s, 50mm/s AC, DC AC 220V,50Hz(110V,60Hz), DC 7.4V, 3700mAh rechargeable lithium polymer battery Fuse specification 2pcs Ø 5 x 20mm AC Time lag: T250mA/250V (Power Supply 220V) Product safety Type Class I, type CF applied part, which has defibrillation – proof applied part Fuse Specification 2 pcs Ø5 x 20mm AC time lag:  T250mA/250V (power supply:  220V) Dimensions 315mm (L) x 215mm (W) x 77mm (H) Net Weight 2.25kg