Serdan [100% Handmade] Double Watch Winder with Swiss Motor (2+0) Black & Red Pattern, Black interior Imported Fine solid wood construction. Hand polished for high quality gloss finish. Interior is made of top quality deluxe silsuede (black in color) Winding of up to 2 watches simultaneously, providing maximum flexibility and versatility. Applicable to all Swiss-made self-winding watches Silent operation and low-electricity consumption design to make it possible to put it in bedroom. Swiss Motor: extremely quiet and long lasting Hand Gloss Polish, hand crafted PU (Polyurethane) with scratch resistant finishing. Luxury design Two-way Power: Powered by 100  240v AC adapter (included) or 2 AA Battery (not included). Please make sure the AV adapter remove prior to use AA batteries