Fellrnr
no edit summary
16:14
+1,448
10:54
+1,235
16:05
+1,071
06:26
+12
12:43
+37
Created page with "A Pulse Oximeter is a device for checking how much oxygen is in your blood (Blood Oxygen Saturation or SpO<sub>2</sub>). They work by shining two different colored lights through..."
06:27
+2,974