1).8" TFT true color LCD, real-time display the waveform of ECG, SPO2, and Resp. At the same time on the screen digital display the data of ECG/Pulse, Temperation, Resp, SPO2,BP(SYS,DIA,MAP) etc. 2).Can store 256 hours data trends(700 groups data trends), and have ECG waveform playback function. 3).Three grades sound and light alarm, lower and upper limit adjustable. 3.0KG/SET.