James Cameron wasn’t the only one that went 35,800 feet deep into the Marianna Trench. Along with the Avatar director, Rolex’s new Deepsea Challenge watch also made the descent into the dark. Pressure at those depths can crush pretty much anything without proper equipment. Here’s how they built the watch up to par to handle those depths. Watch the clip above. [ablogtoread]

Follow @ComplexStyle for the latest drops, info, and lifestyle news.