Orbita's Siena Two Rotorwind Watchwinder. The sloped front case design affords perfect visibility of your timepieces. The top is fitted with a beveled glass viewing panel and superb quadrant hinges. All interior surfaces are lined in rich suede. Orbita's "MADE IN THE USA" patented Rotorwind Winding Technology mimics the natural wrist movement by swinging your timepiece with a series of oscillations triggered by a single revolution of the low-current draw-drive motor. Power is only needed for a few seconds every 10 or 15 minutes. Battery Service Life may now be measured in terms of years, not months. Drive modules simply lift out to load batteries (which are optional). Multiple layers of high gloss polyester lacquer enrich the Burl finished case . The bottom surface of the case is covered in suede to prevent damage to your fine furniture finish.