Orbita Siena Three Burl Watchwinder. The sloped front case design affords perfect visibility. Fitted with a beveled glass viewing panel, the lift up top is fitted with superb quadrant hinges. User-programmable control allows head direction and turns per day (TPD) to be optimized for the watch being wound. Power is supplied by either easily available "C" cell alkaline batteries or by the supplied AC/DC adapter. A "low" battery light automatically signals when battery replacement is due. Made in the USA by ORBITA Corporation.