Underwater window breaker

Underwater window breaker.
Maybe a combination of a normal one and also for underwater.

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Maybe it should work with something which will propell the window breaker part.

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Tests first. There might be dangers.
And a manual is needed.

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More small photovoltaics cells energy production with a lux meter.

More small photovoltaics cells energy production with a lux meter.

For small solar panels and solar power banks.

A light meter, lux meter.
-There are also applications for this on the telephone.
And then making all kinds of hights and angles for finding
the highest light measurements. For maximum photovoltaic energy production.
-Works very well.

Full body acoustic protection suit

Full body acoustic protection suit.

Certain decibells can be deadly.
-Also the infrasound and ultrasound frequencies.

It's for against acoustic weapons.

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Important: Acoustic quiting. Acoustic dampening technologies. Soundproofing technologies.