Body sensing armband

Quantified-self junkies, rejoice: BodyMedia recently announced that its armband sensors will be able to communicate wirelessly with smartphones via Bluetooth. Its health sensors will be one of the first devices, other than ear buds, that link to smartphones with Bluetooth short-range communications.

The device is poised to allows users to monitor a collection of nearly 9,000 variables—physical activity, calories burned, body heat, sleep efficiency and others—collected by the sensors in a BodyMedia armband in real-time, as the day goes by.

The Bluetooth-enabled armband will cost $249 and the BodyMedia data service will cost $7 a month. The device is scheduled go on sale this coming November. In the past, BodyMedia users had to consult personal data downloaded to a Web site or observe a few measurements on a special watchband display, sold for $100.