Matrix PowerWatch review: The smartwatch you’ll never have to charge

The PowerWatch might not contribute to your collection of charging cables, but it comes up short in terms of truly “smart” features

What you need to know

The PowerWatch is a smartwatch from Matrix that stores your body heat as battery power, and so never needs to be charged. It has a 240 x 240-resolution reflective monochrome display, and a large plastic and aluminium casing. It doesn’t show notifications, so its smart features are limited to step, calories and sleep tracking. There’s no GPS or heart-rate monitoring, but the watch does have a “Running Mode” that functions as an independent step counter.

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https://www.expertreviews.co.uk/smartwatches/1406806/matrix-powerwatch-review