Hello Claudio,
I wonder if you are familiar with the "Casio" Wave Ceptor+Solar Wrist watch?
Wave ceptor means it receives Radio time signals.
Solar, means it has a built in, dial faced Solar panel, which operates this 'self setting' Radio watch.

A Canadian friend of mine has removed the watch from its original case, and sealed it between two curved glass saucers, strapping it to his wrist using 'Velcro'

Apparently it is unique, having no buttons or winder, - is atmosphere and water sealed forever. Whilst keeping perfect time.

Love your 'Rotary Engine logo'

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"You will never find a real Human being - even in a mirror." .....Mike Kremer.
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"You will never find a real Human being - Even in a mirror." ....Mike Kremer.