I bought an Oral B toothbrush On a trip overseas it stopped working Seems these toothbrushes are 110 V and do not work in 220 V countries Since this is an item you would take on trips for higiene , it is very bad on Oral B’a side not to tell customers their toothbrushes do not work and will burn overseas Again This is an item of higiene and daily ritual that we take along with shaving razors, combs and the like Computers are items that travel worldwide with its owners too and computers can work on both 110 and 220 Volts Same as phone chargers Oral B just dissappointed me I expect an explanation and I expect a refund