What is the big differences between the BM08 and other baby monitors like BM03 and BM04?

① Screen: The BM03 and BM04 is equipped with a built-in local screen, while the BM08 only supports viewing via the APP. 

② In addition, the BM08 is smarter and supports millimeter-wave radar and visual algorithms: it can monitor the baby's respiratory rate and heart rate, and track the baby's status in real time through visual algorithms.