Serdan [100% Handmade] Double Watch Winder with Swiss Motor (2+0) Black Pattern Imported Fine solid wood construction. Hand polished for high quality gloss finish. Interior is made of top quality deluxe silsuede. 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