The first wristwatch was created for a woman, Countess Koscowicz of Hungary, by Swiss watchmaker Patek Philippe in 1868. Men at the time still primarily used pocket watches.
The world's first quartz watch was created by Seiko in 1969. The watch used a quartz crystal oscillator to keep time, which was much more accurate than the mechanical watches of the time.
The world's most expensive watch is the Graff Diamonds Hallucination, which is valued at $55 million. The watch has a strap made of platinum and more than 110 carats worth of rare-coloured diamonds.
The Rolex Deepsea Challenge watch is designed to withstand depths of up to 12,000 meters, making it the deepest diving watch in the world.
The first wristwatch with an alarm function was created by Eterna in 1914. The watch featured a small hammer that struck a gong to produce the alarm sound.