CHIYODA Automatic Watch Winder Accessory-6V Power Adapter Compatible With most CHIYODA Watch Winder Models-Single,Double,Quad It is 6V adapter, may not for some Chiyoda old version watch winder 3V adapter If you not sure the model, please ask help before purchasing this adapter Input Voltage Range: AC 110V - 240V You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!