![Amazon.com: Compatible with Fitbit Dongle USB Wireless Sync Dongle for Charge 4/Varsa 2/Versa Lite/Ace2/Charge 3/Flex 2/Charge 2/Alta HR/Blaze/Surge/Charge HR/Flex/One Tracke : Electronics Amazon.com: Compatible with Fitbit Dongle USB Wireless Sync Dongle for Charge 4/Varsa 2/Versa Lite/Ace2/Charge 3/Flex 2/Charge 2/Alta HR/Blaze/Surge/Charge HR/Flex/One Tracke : Electronics](https://m.media-amazon.com/images/I/8115CGHNyAL._AC_SL1500_.jpg)
Amazon.com: Compatible with Fitbit Dongle USB Wireless Sync Dongle for Charge 4/Varsa 2/Versa Lite/Ace2/Charge 3/Flex 2/Charge 2/Alta HR/Blaze/Surge/Charge HR/Flex/One Tracke : Electronics
![Amazon.com: Compatible with Fitbit Dongle USB Wireless Sync Dongle for Charge 4/Varsa 2/Versa Lite/Ace2/Charge 3/Flex 2/Charge 2/Alta HR/Blaze/Surge/Charge HR/Flex/One Tracke : Electronics Amazon.com: Compatible with Fitbit Dongle USB Wireless Sync Dongle for Charge 4/Varsa 2/Versa Lite/Ace2/Charge 3/Flex 2/Charge 2/Alta HR/Blaze/Surge/Charge HR/Flex/One Tracke : Electronics](https://m.media-amazon.com/images/I/61CgaMQa8vL._AC_SL1150_.jpg)
Amazon.com: Compatible with Fitbit Dongle USB Wireless Sync Dongle for Charge 4/Varsa 2/Versa Lite/Ace2/Charge 3/Flex 2/Charge 2/Alta HR/Blaze/Surge/Charge HR/Flex/One Tracke : Electronics
![SplenSun for Fitbit Wireless Dongle Sync Transceivers Compatible Fitbit Inspire HR,Inspire 2,Versa Lite,Charge 3,Charge 2,Charge HR,Flex 2,Ionic,Blaze,Alta HR,Ace,Surge,Aria 2 Fitness (1 Pack) : Electronics SplenSun for Fitbit Wireless Dongle Sync Transceivers Compatible Fitbit Inspire HR,Inspire 2,Versa Lite,Charge 3,Charge 2,Charge HR,Flex 2,Ionic,Blaze,Alta HR,Ace,Surge,Aria 2 Fitness (1 Pack) : Electronics](https://m.media-amazon.com/images/I/51WgV2g0aEL._AC_SX522_.jpg)