The Ultimate Fitbit Watch Strap Compatibility Guide
Every Fitbit watch model with its lug width. Use the filters or search below to find your model, then click for compatible straps.
| Brand | Watch Name | Model Number | Lug Width | Release Date | Full Name | |
|---|---|---|---|---|---|---|
| Fitbit | Ace 2 | FB412 | Fitbit Inspire Connection | 2019 | Fitbit Ace 2 | |
| Fitbit | Ace 3 | FB419 | Fitbit Inspire 2 Connection | 2021 | Fitbit Ace 3 | |
| Fitbit | Ace LTE | GA05576-NA | 2024 | Fitbit Ace LTE | ||
| Fitbit | Ace | FB411 | Fitbit Alta Connection | 2018 | Fitbit Ace | |
| Fitbit | Alta | FB406 | Fitbit Alta Connection | 2016 | Fitbit Alta | |
| Fitbit | Blaze | FB502 | 23mm | 2016 | Fitbit Blaze | |
| Fitbit | Charge 2 | FB407 | Fitbit Charge 2 Connection | 2016 | Fitbit Charge 2 | |
| Fitbit | Charge 3 | FB409 | Fitbit Charge 3 Connection | 2018 | Fitbit Charge 3 | |
| Fitbit | Charge 4 | FB417 | Fitbit Charge 3 Connection | 2020 | Fitbit Charge 4 | |
| Fitbit | Charge 5 | FB421 | Fitbit Charge 5 Connection | 2021 | Fitbit Charge 5 | |
| Fitbit | Charge 6 | GA05195-WW | Fitbit Charge 5 Connection | 2023 | Fitbit Charge 6 | |
| Fitbit | Charge HR | FB405 | Fitbit Charge HR Connection | 2014 | Fitbit Charge HR | |
| Fitbit | Flex 2 | FB403 | Fitbit Flex 2 Connection | 2016 | Fitbit Flex 2 | |
| Fitbit | Inspire 2 | FB418 | Fitbit Inspire 2 Connection | 2020 | Fitbit Inspire 2 | |
| Fitbit | Inspire 3 | FB424 | Fitbit Inspire 3 Connection | 2022 | Fitbit Inspire 3 | |
| Fitbit | Inspire | FB412 | Fitbit Inspire Connection | 2019 | Fitbit Inspire | |
| Fitbit | Ionic | FB503 | Fitbit Ionic Connection | 2017 | Fitbit Ionic | |
| Fitbit | Luxe | FB422 | Fitbit Luxe Connection | 2021 | Fitbit Luxe | |
| Fitbit | Sense 2 | FB521 | Fitbit Versa 4 Connection | 2022 | Fitbit Sense 2 | |
| Fitbit | Sense | FB512 | Fitbit Versa 3 Connection | 2020 | Fitbit Sense | |
| Fitbit | Surge | FB501 | Fitbit Surge Connection | 2014 | Fitbit Surge | |
| Fitbit | Versa 2 | FB507 | 23mm | 2019 | Fitbit Versa 2 | |
| Fitbit | Versa 3 | FB511 | Fitbit Versa 3 Connection | 2020 | Fitbit Versa 3 | |
| Fitbit | Versa 4 | FB523 | Fitbit Versa 4 Connection | 2022 | Fitbit Versa 4 | |
| Fitbit | Versa Lite | FB415 | 23mm | Fitbit Versa Lite | ||
| Fitbit | Versa | FB504 | 23mm | 2018 | Fitbit Versa |
What is lug width?
Lug width is the distance — measured in millimetres — between the two lugs on your watch case where the strap attaches. It determines which straps will fit. Most watches are 18mm, 20mm, or 22mm.