According to the photo Bezos posted, this $42 million watch was built inside a mountain in the Sierra Diablo range in Texas (USA). This is a mechanical watch, running on a day and night heat cycle. Photo: Long Now Foundation.

According to the photo Bezos posted, this $42 million watch was built inside a mountain in the Sierra Diablo range in Texas (USA). This is a mechanical watch, running on a day and night heat cycle. Photo: Long Now Foundation.

This sophisticated and giant watch is the brainchild of genius American computer inventor Danny Hillis. He is a co-founder of Applied Invention, an association of engineers and scientists specializing in researching technology solutions for the world’s leading companies. Photo: Long Now Foundation.

This sophisticated and giant watch is the brainchild of genius American computer inventor Danny Hillis. He is a co-founder of Applied Invention, an association of engineers and scientists specializing in researching technology solutions for the world’s leading companies. Photo: Long Now Foundation.

In 1995, Hillis began brainstorming ideas for a project to build a clock that could accompany humanity for 10,000 consecutive years. Later, this project was inherited by the Long Now Foundation corporation, the company of which Hillis is a co-founder. Photo: Long Now Foundation.

In 1995, Hillis began brainstorming ideas for a project to build a clock that could accompany humanity for 10,000 consecutive years. Later, this project was inherited by the Long Now Foundation corporation, the company of which Hillis is a co-founder. Photo: Long Now Foundation.

As expected, the project will be built inside a mountain and is designed to be able to display the correct time until 10,000 years later. Standing more than 150 meters tall, the clock will be built to require as little maintenance as possible and will be powered by the sun. Photo: Vogue.

As expected, the project will be built inside a mountain and is designed to be able to display the correct time until 10,000 years later. Standing more than 150 meters tall, the clock will be built to require as little maintenance as possible and will be powered by the sun. Photo: Vogue.

The special thing about this “one of a kind” watch is that the melodies will be played only once at random intervals over the course of 10,000 years. Specifically, the second hand moves once a year and every 100 years the minute hand changes position, the alarm will sound when a century ends. Photo: Long Now Foundation.

The special thing about this “one of a kind” watch is that the melodies will be played only once at random intervals over the course of 10,000 years. Specifically, the second hand moves once a year and every 100 years the minute hand changes position, the alarm will sound when a century ends. Photo: Long Now Foundation.

To design this timeless work, the watch’s constituent materials must also be carefully selected, including titanium, ceramic, glass, sapphire and stainless steel. Photo: Long Now Foundation.​

To design this timeless work, the watch’s constituent materials must also be carefully selected, including titanium, ceramic, glass, sapphire and stainless steel. Photo: Long Now Foundation.

Amazon’s CEO believes that building a 10,000-year clock is a way to remind people that the distant future is always waiting and our descendants will be the ones to experience it. At the same time, he also hopes that the current generation should appreciate every moment and be responsible for the future. Photo: Long Now Foundation.

Amazon’s CEO believes that building a 10,000-year clock is a way to remind people that the distant future is always waiting and our descendants will be the ones to experience it. At the same time, he also hopes that the current generation should appreciate every moment and be responsible for the future. Photo: Long Now Foundation.