Are my wireless earphones faulty?

I bought some wireless earphones called Kitsound "Bounce" brand new sealed from a well known store. gone to charge them via my computer usb have followed instructions that say a light only comes on when earphones are charging as a light doesn't come on can only assume they are fully charged but when i... show more I bought some wireless earphones called Kitsound "Bounce" brand new sealed from a well known store. gone to charge them via my computer usb have followed instructions that say a light only comes on when earphones are charging as a light doesn't come on can only assume they are fully charged but when i try to turn them on for the length of time specified and longer nothing happens

am i doing something wrong or do i have a faulty product
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