The Nike FuelBand II is a wearable device that monitors vital signs like heart rate and sleep quality through sensors. It provides real-time feedback on athletic performance and integrates with a personal analytics dashboard and social media. Nike aims to position itself as a wellness company and estimates the device will reach profitability in year 6 with $38.6 million in profits. The global wearable device market is projected to grow significantly with shipments reaching over 300 million units by 2020, representing a $12 billion industry. The FuelBand II targets recreational athletes and corporate wellness programs.