Following on from its launch a few months back, Sparkfun have got hold of a Microsoft Band and have taken a look inside.
Microsoft Band is a stylish wrist based wearable device that integrates multiple sensors such as heart rate, activity tracking, sleep tracking, GPS, UV monitor and more.
At the heart of the Microsoft Band you will find an ARM Cortex-M4 based Freescale Kinetis K24 microcontroller. The Freescale Kinetis K24 brings the best of ultra low power Cortex-M performance coupled with the signal processing extensions of Cortex-M4 being the perfect solution for the advanced sensor management in wearable devices such as this.
You can take a look at the teardown here: https://www.sparkfun.com/news/1681
You can read more about how ARM and Freescale are enabling the wearables revolution in this whitepaper: http://cache.freescale.com/files/corporate/doc/white_paper/WEARABLESARMWP.pdf
Check out the cool video in David's link above;-)
Amazing how many new devices keep coming on the market. Can imagine how many new ones we'll hear about at CES.