The Observer - The New Review - - SCIENCE & TECH -

What is it?

A smart­watch that is pow­ered by the ther­mal en­ergy from your body.

Good points

Never runs out of charge while worn, no fid­dly ca­bles and the mak­ers say it will keep go­ing for 12 months once you take it off.

Bad points

Ba­sic func­tions and sim­ple LCD screen for lower power use.

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