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Joining the ranks of other health tech giants, Amazon on Thursday debuted a wrist wearable that could give it a toehold into the increasingly hot field of health tracking.

Called Halo, the screenless device can track sleep, body temperature, physical activity, and voice patterns, and will also give users the option to link some health data to their electronic medical records. The features position Amazon well to eventually integrate the new gadget — and the suite of health data it will amass — into the company’s well-established health care portfolio, which also includes primary care clinics and medication management tools. Cardiologist Maulik Majmudar is leading the effort as principal medical officer for Amazon Halo.

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