The Swiss firm mb-microtec developed the technology to produce GTLS ( gaseous tritium light sources ) so small, they can be installed on the hands and dial of your wristwatch.
These light sources, marketed as «trigalight» or «mb-microtec illumination» are independent of a battery or any other source of outside energy, never need recharging or servicing and do not require the push of a button. They glow permanently and a 100 times brighter than anything comparable, for up to twen
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