Steinhausen 12-Mode Single Motor and Cylinder Olive Matte Wood Grain Winder with Black PU Leather interior Backstein Collection, Dimensions: 15, 5 cm x 11, 6 cm x 11, 7 cm, Color: Olive, Materials: Wood Grain (exterior) PU Leather (interior), Number of Winders: Single, Batteries: AA (2) not included, Holds 1 Total Watches, Bidirectional: Yes, Winder Shell Material: Wood, Inside Material: PU Leather, Number of Winder Motors: 1, Quad/Dual: Single, Available Storage Areas: Winding Display Case, Winder Modes: 12, Power Source: 3VDC, SKU: STEIN222