BodyMedia introduced its CORE 2 fitness tracker armband earlier today, but all we saw of it were a couple of rendered photos. Well, we just got to see some prototypes of the device, including the basic CORE 2 band, its metal bracelet and swappable plastic face plate accessories, and learned a bit more about the device. As you can see in our gallery of photos, the new model is quite a bit smaller and thinner than BodyMedia's previous health trackers. For now, the basic CORE 2 model comes with an adjustable elastic band (available in multiple colors) and a sensor module pa
