<P> This is a list of Fitbit products that American consumer electronics company Fitbit has released . </P> <Table> <Tr> <Th> Model </Th> <Th> Type </Th> <Th> Released </Th> <Th> Steps </Th> <Th> Floors </Th> <Th> Heart rate </Th> <Th> Sleep </Th> <Th> Clock </Th> <Th> GPS </Th> <Th> Water resistance </Th> <Th> Battery life </Th> <Th> Customizable appearance </Th> </Tr> <Tr> <Td> Ultra </Td> <Td> Clip </Td> <Td> 2011 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> Resistant </Td> <Td> 7 days </Td> <Td> </Td> </Tr> <Tr> <Td> One </Td> <Td> Clip </Td> <Td> 2012 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> Resistant </Td> <Td> 10 - 14 days </Td> <Td> </Td> </Tr> <Tr> <Td> Zip </Td> <Td> Clip </Td> <Td> 2012 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> Resistant </Td> <Td> 4 - 6 months </Td> <Td> </Td> </Tr> <Tr> <Td> Flex </Td> <Td> Wristband </Td> <Td> 2013 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> Resistant </Td> <Td> 5 days </Td> <Td> </Td> </Tr> <Tr> <Td> Force </Td> <Td> Wristband </Td> <Td> 2013 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> Charge </Td> <Td> Wristband </Td> <Td> 2014 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> Resistant </Td> <Td> 7 - 10 days </Td> <Td> </Td> </Tr> <Tr> <Td> Charge HR </Td> <Td> Wristband </Td> <Td> 2015 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> Resistant </Td> <Td> 5 days </Td> <Td> </Td> </Tr> <Tr> <Td> Surge </Td> <Td> Smart watch </Td> <Td> 2015 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> Resistant </Td> <Td> 7 days </Td> <Td> </Td> </Tr> <Tr> <Td> Blaze </Td> <Td> Smart watch </Td> <Td> 2016 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> Resistant </Td> <Td> 5 days </Td> <Td> </Td> </Tr> <Tr> <Td> Alta </Td> <Td> Wristband </Td> <Td> 2016 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> Resistant </Td> <Td> 5 days </Td> <Td> </Td> </Tr> <Tr> <Td> Charge 2 </Td> <Td> Wristband </Td> <Td> 2016 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> Resistant </Td> <Td> 5 days </Td> <Td> </Td> </Tr> <Tr> <Td> Flex 2 </Td> <Td> Wristband </Td> <Td> 2017 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> Waterproof </Td> <Td> 5 days </Td> <Td> </Td> </Tr> <Tr> <Td> Alta HR </Td> <Td> Wristband </Td> <Td> 2017 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> Resistant </Td> <Td> 7 days </Td> <Td> </Td> </Tr> <Tr> <Td> Ionic </Td> <Td> Smart watch </Td> <Td> 2017 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> Resistant </Td> <Td> 5 days </Td> <Td> </Td> </Tr> </Table> <Tr> <Th> Model </Th> <Th> Type </Th> <Th> Released </Th> <Th> Steps </Th> <Th> Floors </Th> <Th> Heart rate </Th> <Th> Sleep </Th> <Th> Clock </Th> <Th> GPS </Th> <Th> Water resistance </Th> <Th> Battery life </Th> <Th> Customizable appearance </Th> </Tr>

When did the fitbit charge 2 get released
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