Currently reigning as the world’s most expensive smartwatch, it features multiple rows of diamonds around the face, buttons and strap to add up to 11.30-12.30 carats. The total amount of diamonds and the price, which ranges from $109,995-$114,955, depends on your band size. This state-of-the-art stunner comes in nothing less than a Zero Halliburton Case with carbon fiber and suede leather interior; Brikk.com.