The Singleton bottlings are a release of Diageo intended to help introduce new customers to the world of scotch. They are designed to be approachable, drinkable, and a defining taste of a particular distillery.
The Singleton of Dufftown 12yr is part of Diageo's classic malts collection and aged for 12 years in a combination of American and European oak. It falls into their "rich and rounded" category. It is sourced from the Dufftown Distillery in the Speyside region, known for lightly peated and smooth scotch. They suggest comparing to Oban and Clynelish.