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The entire belt weighs just 46 grams
The new chip is not just energy efficient, but very compact, enabling the creation of an extremely slim (1.1cm-thick) and small (3.8 x 6.5 cm) plastic sensor housing.
The volume production of a new low-energy Bluetooth 4.0 heart-rate chest belt is likely to kickstart a whole new genre of health and fitness related smartphone apps
Nordic Semiconductor's new nRF8001 chip
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