Purchased at MBK in Bangkok. The charger failed on charging the first battery, so presented at the Bose distributor with the failed product. They informed me that I had purchased a fake. The only thing immediately clear when comparing the fake with the genuine product is that the power switch on the fake is shiny silvery looking, whereas the original Bose switch has exactly the same dull silver look as the main body of the ear shells. The documentation coming with the fake looks authentic.