Latest Apple iWatch market rumors point towards OLED touchscreens, and health-related data collection ranging from sleep activity to blood oxygen levels, according to a recent Nikkei report.

Apple is rumored to be fairly confident in the new device, and will be releasing 3 million to 5 million units in late October this year. If the rumor proves true, the number of smart watches released by the Cupertino company would exceed global smartwatch sales in 2013, noted an appleinsider report.

Nike’s expected exit from the wearable device could indicate a closer iWatch partnership with Apple. Nike is said to be turning its focus on services and less on hardware.