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My Charge HR has recently developed a bubble of air near the monitor. It looks bad. How do I get rid of the air bubble?

There are now replacement bands available on eBay. I repaired mine myself and so far so good.It was rather easy really. Here is the link: http://www.ebay.co.uk/itm/182409259191?s

This is a known issue with the Charge HR. It seems heat causes the glue to fail. If your Charge HR was purchased within 1 year you should contact Fitbit customer support for a replacement.