Bodytrak has unveiled its first activity tracker that measures your vital signs discreetly through your ear.

Unveiled at the Consumer Electronics Shows CES in Vegas, the so-called "hearable" monitors your core body temperature, heart rate, speed, distance and cadence, or regular rhythm or beat, in real-time.

This is combined with an analytics platform to help boost performance and improve recovery time.

The ear is unique because it is the only location in the body from which a combination of core body temperature and heart rate can be measured accurately together.

Bodytrak is also water resistant and works as an earphone that lets you listen to music and make and receive calls.

In addition to being less obtrusive, Bodytrak claims the hearable s proximity to the brain, enables it to pick up very accurate and immediate changes in the body.

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