home care, hospitals, clinics, healthcenters, oxygen bars, highland district, physical care in sports (it is recommended touse before or after sports) etc.features:6 display modes of spo2 value, pi, pr, pulse wave, bar graph humanized menu and prompts, adjustable brightness andmemory of last setting etc.strong anti-interference, low perfusionof s 0.3%3-level setting menu8 hour data storage and analysis functionlow power consumption, auto switch-off functionvarious customized services are available...