This Heiden automatic single watch winder is a new design. It is dual powered which means it will run either on batteries (AAA size) or using the included power adapter. This model is perfect for automatic watch owners who would like to have the choice of storing inside a drawer, closet, or safe. This model has 4 different settings to accommodate many brands and models of automatic watches. You cannot mess with a class is an adage that you often hear, and this is something that Heiden has clearly taken to heart in the design and construction of this fabulous accessory. Finished in eye catching burl wood with an attractive grain, this model takes a nod to the classic designs while maintaining a firm grasp on the that make it competitive in the modern world. The result is a watch winder that looks good, can stand the test of time, and offers enough and functionality to compare favorably with the finest watch winders on the market. Runs on Batteries or with AC Adapter. Great for Storing Inside a Safe, Closet, or Drawer. Perfect Size for Travel.