Can the iphone 6 read oxygen saturation levels (sp02) withot any additional accessories?

I understand the iphone 6 can read your heartrate with the inbuilt camera. Bit can ot actually read yor saturation also?

Nothing can read heart rate with a camera. The apple watch can due to the light sensors on the back as those lights are absorbed by blood vessels due to the color and because its up against skin.

If you are relying on something silly like a camera to get health information, then you arent very serious about your health.