Elegant and…skinny, Helios by Botta Design is a titanium wristwatch that, at 4.9mm, approaches the thinness of a coin, and weighs in at only 28g (one ounce!), strap included. Extremely light, extremely flat. Furthermore, the tapered face allows it to slip easily under even the snuggest of cuffs. It’s practically not even there. Swiss movement, sapphire glass, water resistant to 3 ATM, vegetable tanned leather or titanum strap, black or white dial, and entirely designed and manufactured in Germany. Starting at €398 (about $501).