Features
Expect to see the following features in the iWatch:

Apps – Since the iWatch will run the iOS, it will also be able to run iOS apps. Whether it can use standard iPhone apps or new ones will have to be made specifically for it remains to be seen, but it seems reasonable that most core iOS apps will work on the iWatch.

Fitness – With the success of personal fitness tracking device like the Nike FuelBand (Apple has hired people who worked on it) and the Fitbit product line, it's clear that people are interested in tracking their exercise and other fitness with wearables. Expect a pedometer and other fitness-tracking features.

Health – The iWatch may end up being able to track an impressive amount of health information. Rumors suggest that it will track heart rate, blood oxygen levels, blood pressure, hydration, and more. What's most interesting is that it will do all of this with non-invasive sensors, instead tracking these things with optoelectronics, a technology that uses light to measure these stats. This level of health tracking is much more extensive than what's offered either by fitness bands or other mainstream, consumer smartwatches.

Heart Attack Predictor – This one is a little more out there, but I'm including it because it seems consistent with the iWatch's proposed health-tracking features. Apparently, Apple wants to use the sensors in the iWatch to predict heart attacks its wearers are in danger of suffering. If this could happen, it would be quite a feature.

- See more at: http://trendymediablog.com/2014/08/everything-you-need-to-know-about-apples-iwatch/