The Nokia AC-4x is a multi voltage chargerThe Nokia AC-4xallows you to use your phone whilst it"s charging even when the battery is completely flat. Charging time depends on battery capacity and condition.Simply plug the charger in to a wall socket and connect the lead to the bottom of your Nokia mobile phone or desktop/battery stand.Please note this is a 2mm Connector So Nokia mobile phones and accessories that feature the larger 3mm charger connector will not work. Please check your manual. Please Note this is not for Nokia handsets that use the Larger 3mm connector. These phones require the Nokia ACP-12x Mains Charger.