One LED serves as a battery level indicator, one flashes yellow after moderate impacts and a third flashes red for severe blows. mc10 wasn't willing to share the exact hardware inside, but we know that it's got a rechargeable battery and has rotational acceleration, multi-directional acceleration, impact location and impact duration.

ENGADGET

They also calculated impact dose injury risk parameters common to laboratory and on-field traumatic neuromechanics: linear acceleration, angular acceleration, angular velocity, Gadd Severity Index, diffuse axonal injury, acute subdural hematoma, and brain contusion.

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