What is the warranty of this key board.

I have purchased one around first week of April as the 9.7 was released. I haven't used the keyboard much. But now I realized one of the letter keys are not that sensisitive. That i have to press it more than once inorder for it to appear on the screen. Thanks for your time. Have a good one.

Smart Keyboard for 9.7-inch iPad Pro

Smart Keyboard for 9.7-inch iPad Pro

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