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On the specification, you mention the battery life last 8765 hours, and don't forget there are only 8760 hours a year. We can not replace the battery, and each year we have to buy another one, I don't think it is fair to the consumers. In another word, we have to spend $25 each year. I honestly suggest that the company can modify the device, we as customers can change the battery ourselves. Just for information, even for iPhone we at least can go to dealer to replace the battery, we don't have to throw the whole thing.