A606/A606B is a portable and high quality 6-channel ECG, which offer not only normal thermal printing but also external printing solution. It can used in hosipital. Clinic and emergencyies. A606: 4.3 inch color TFT LCD A606B: 5.7 inch color TFT LCD Product Description Features 6 channel ECG machine with automatic interpretation Manual/Auto working Modes Simultaneous 12 leads acquisition and 6-ch recording with high resolution thermal printer. 4.3/5.7 inch Color TFT LCD display ECG wave and friendly menu setting. Support touch panel and keypad input ways Large ECG recordings storage capacity and support SD card storage. Measurement and interpretation results preview in LCD for selectable printing. 120 seconds ECG wave freeze and replay function. Lead-off detection and alert Digital filtering, resisting baseline drift, AC and EMG interference Built in USB/RS232 interface. Data transmitting to PC via LAN Built in rechargeable Li-ion battery support less than 3 hours continuously work. AC power supply at 90-240