Key Features of the Professional Portable 12 Channel ECG Machine: Witness superior clarity with a 7'' color LCD, ensuring every detail is sharply visible. Experience seamless 12-channel format recording on 210mm paper, complemented by an exceptional automatic interpretation feature. Benefit from ample storage for up to 250 patient cases, ensuring comprehensive historical data management. (Optional SD card storage enhances versatility and data handling.) Effortlessly switch between multiple working modes: Manual, Automatic, R-R, and Store, tailored to various operational needs. Capture and maintain thorough patient information records with ease and precision. Enjoy flexible power compatibility with 110-230V, 50/60Hz, along with a built-in rechargeable Li-ion battery that empowers your device to operate continuously for approximately 9 hours. Enhance connectivity and productivity with USB/UART communication ports, supporting USB storage, laser printer output, and optional PC ECG software integration. Utilize recording paper with dimensions of 1 roll (210mm x 30m) for continuous, uninterrupted documentation.