At 310 pounds, I wanted to lose weight, and would try anything... and I did. A free e-book about the trials and tribulations of losing 120 pounds in a year.
The iOximeter is a pulse oximeter for Smart Phones. Reads your Blood Oxygen Saturation and Pulse Rate. Requires no batteries. Powered by the headphone jack.
At 310 pounds, I wanted to lose weight, and would try anything... and I did. A free e-book about the trials and tribulations of losing 120 pounds in a year.