Considering that heart rate monitors cost $100 and up (if you don't find them on sale) and that people spend lots of money on fitness equipment and/or gym memberships, this is a good price point for such a device.
Body composition is much more important than the calculated BMI and other measures. Of course, it requires more intelligent devices, such as this one, to calculate.
At this year's MD&M West show, lots of material suppliers are talking about new formulations for wearables and things that stick to the skin, whether it's adhesives, wound dressings, skin patches and other drug delivery devices, or medical electronics.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.