The product sent didn't work on the 3GS iphone. After sending it back at my expense, I got neither the a charger or a refund. After leaving negative feedback for the transaction, I was asked to retract my feedback and I would be sent the right charger. I would have happily changed the feedback if this company had sent the right product or a refund before expecting me to change my feedback. I left it, and have neither a refund or a charger from this company. Shop elsewhere if you need a 3GS charger...