$10 Million Pocket Watch By Vacheron Constantin
Swiss watch maker Vacheron Constantin claims to have made the most complicated timepiece ever -- a pocket watch called the Reference 57260.
The watch is made of 2,826 parts and took a whopping eight years to design and construct, according to Complex.
It is four inches wide and is complete with 31 hands and 57 functions that include a lunar and religious calendar. The original timepiece is covered in an 18K gold case and was hand-decorated by one master watchmaker.
Despite how impressive it is, it's not for sale. It was commissioned for a private collector, and has an estimated value is around $10 million.