This page lists the GNSS chipsets that are used in the Garmin fēnix watches.
The history of the fēnix (and epix) has been summarised in an article by DC Rainmaker.
The various models are listed in reverse-chronological order. The release dates are generally from Wikipedia.
| Model | Released | Product | Chipset | CIQ | APPro | References |
|---|---|---|---|---|---|---|
| fēnix 9 Pro - 51 mm, Solar | 2026-08 | 4956 | TBC | 6.0 | Y | FCC teardown |
| fēnix 9 Pro - 47 mm, Solar | 2026-08 | 4955 | TBC | 6.0 | Y | FCC teardown |
| fēnix 9 Pro - 51 mm | 2026-08 | 4954 | TBC | 6.0 | Y | FCC teardown |
| fēnix 9 Pro - 47 mm | 2026-08 | 4953 | TBC | 6.0 | Y | FCC teardown |
| fēnix 9 Pro - 43 mm | 2026-08 | 4952 | TBC | 6.0 | Y | FCC teardown |
| fēnix 9 - 51 mm | 2026-08 | 5134 | TBC | 6.0 | Y | FCC teardown |
| fēnix 9 - 47 mm | 2026-08 | 5134 | TBC | 6.0 | Y | FCC teardown |
| fēnix 9 - 43 mm | 2026-08 | 5133 | TBC | 6.0 | Y | FCC teardown |
| Model | Released | Product | Chipset | CIQ | APPro | References |
|---|---|---|---|---|---|---|
| fēnix 8 Pro - 51 mm, MicroLED | 2025-09 | 4631 | SYN4778 | 6.0 | Y | Garmin specifications + FCC teardown |
| fēnix 8 Pro - 51 mm, AMOLED | 2025-09 | 4631 | SYN4778 | 6.0 | Y | Garmin specifications + FCC teardown |
| fēnix 8 Pro - 47 mm, AMOLED | 2025-09 | 4631 | SYN4778 | 6.0 | Y | Garmin specifications + FCC teardown |
| fēnix 8 - 51 mm, AMOLED | 2024-08 | 4536 | SYN4778 | 6.0 | Y | Garmin specifications + FCC teardown |
| fēnix 8 - 47 mm, AMOLED | 2024-08 | 4536 | SYN4778 | 6.0 | Y | Garmin specifications + FCC teardown |
| fēnix 8 - 43 mm, AMOLED | 2024-08 | 4534 | SYN4778 | 6.0 | Y | Garmin specifications + FCC teardown |
| fēnix 8 - 51 mm, Solar Sapphire | 2024-08 | 4533 | SYN4778 | 6.0 | Y | F Tipi teardown + FCC teardown |
| fēnix 8 - 47 mm, Solar Sapphire | 2024-08 | 4532 | SYN4778 | 6.0 | Y | Garmin specifications + FCC teardown |
The fēnix E is is essentially a rebranded, budget-friendly version of the epix (Gen 2) - 47 mm, stainless steel.
| Model | Released | Product | Chipset | CIQ | APPro | References |
|---|---|---|---|---|---|---|
| fēnix E | 2024-08 | 4666 | AG3335MN | 6.0 | Y | Garmin specifications + FCC teardown |
| fēnix 7X Pro - Sapphire Solar | 2023-05 | 4376 | AG3335M | 5.2 | Y | Garmin settings + FCC teardown |
| fēnix 7 Pro - Sapphire Solar | 2023-05 | 4375 | AG3335M | 5.2 | Y | Garmin settings + FCC teardown |
| fēnix 7S Pro - Sapphire Solar | 2023-05 | 4374 | AG3335M | 5.2 | Y | Garmin settings + FCC teardown |
| fēnix 7X Pro - Solar | 2023-05 | 4376, 4596 | AG3335M | 5.2 | Y | Garmin settings + FCC teardown |
| fēnix 7 Pro - Solar | 2023-05 | 4375, 4595 | AG3335M | 5.2 | Y | Garmin settings + FCC teardown |
| fēnix 7S Pro - Solar | 2023-05 | 4374 | AG3335M | 5.2 | Y | Garmin settings + FCC teardown |
| fēnix 7X - Sapphire Solar | 2022-01 | 3907, 3910 | AG3335M | 5.2 | Y | Garmin settings + FCC teardown |
| fēnix 7 - Sapphire Solar | 2022-01 | 3906, 3909 | AG3335M | 5.2 | Y | Garmin settings + FCC teardown |
| fēnix 7S - Sapphire Solar | 2022-01 | 3905, 3908 | AG3335M | 5.2 | Y | Garmin settings + FCC teardown |
| fēnix 7X - Solar | 2022-01 | 3907, 3910 | AG3335MN | 5.2 | Y | F Tipi teardown + FCC teardown |
| fēnix 7 - Solar | 2022-01 | 3906, 3909 | AG3335MN | 5.2 | Y | Garmin manual + FCC teardown |
| fēnix 7S - Solar | 2022-01 | 3905, 3908 | AG3335MN | 5.2 | Y | element14 teardown + FCC teardown |
| fēnix 7X | 2022-01 | 3907, 3910 | AG3335MN | 5.2 | Y | Garmin manual + FCC teardown |
| fēnix 7 | 2022-01 | 3906, 3909 | AG3335MN | 5.2 | Y | Garmin manual + FCC teardown |
| fēnix 7S | 2022-01 | 3905, 3908 | AG3335MN | 5.2 | Y | Garmin manual + FCC teardown |
The fēnix E may be using the single-band AG3352B, just like the vívoactive 6 which was released 2025-04.
Alternative product number(s) are APAC variants.
Additional notes about the Airoha chipsets are available on another page.
| Model | Released | Product | Chipset | CIQ | APPro | References |
|---|---|---|---|---|---|---|
| fēnix 6X Pro Solar | 2020-07 | 3291, 3516, 3783 | CXD56xxxx | 3.4 | Y | Garmin manual + DCR review |
| fēnix 6 Pro Solar | 2020-07 | 3290, 3515, 3782, 3767, 3771 | CXD56xxxx | 3.4 | Y | Garmin manual + DCR review |
| fēnix 6S Pro Solar | 2020-07 | 3288, 3513, 3765, 3769 | CXD56xxxx | 3.4 | Y | Garmin manual + DCR review |
| fēnix 6 Solar | 2020-07 | 3289, 3514, 3766, 3770 | CXD56xxxx | 3.4 | Y | Garmin manual |
| fēnix 6S Solar | 2020-07 | 3287, 3512, 3764, 3768 | CXD56xxxx | 3.4 | Y | Garmin manual |
| fēnix 6X Sapphire | 2019-08 | 3291, 3516, 3783 | CXD56xxxx | 3.4 | Y | Garmin manual |
| fēnix 6 Sapphire | 2019-08 | 3290, 3515, 3782, 3767, 3771 | CXD56xxxx | 3.4 | Y | Garmin manual |
| fēnix 6S Sapphire | 2019-08 | 3288, 3513, 3765, 3769 | CXD56xxxx | 3.4 | Y | Garmin manual |
| fēnix 6X Pro | 2019-08 | 3291, 3516, 3783 | CXD56xxxx | 3.4 | Y | Garmin manual + F Tipi teardown |
| fēnix 6 Pro | 2019-08 | 3290, 3515, 3782, 3767, 3771 | CXD56xxxx | 3.4 | Y | Garmin manual + DCR review |
| fēnix 6S Pro | 2019-08 | 3288, 3513, 3765, 3769 | CXD56xxxx | 3.4 | Y | Garmin manual + DCR review |
| fēnix 6 | 2019-08 | 3289, 3514, 3766, 3770 | CXD56xxxx | 3.4 | Y | Garmin manual + DCR review |
| fēnix 6S | 2019-08 | 3287, 3512, 3764, 3768 | CXD56xxxx | 3.4 | Y | Garmin manual + DCR review |
Alternative product number(s) are APAC variants.
Additional notes about the Sony chipsets are available on another page.
| Model | Released | Product | Chipset | CIQ | APPro | References |
|---|---|---|---|---|---|---|
| fēnix 5X Plus | 2018-06 | 3111, 3135 | MT3333 | 3.3 | Y | |
| fēnix 5 Plus | 2018-06 | 3110, 3089 | MT3333 | 3.3 | Y | EDN teardown |
| fēnix 5S Plus | 2018-06 | 2900, 3134 | MT3333 | 3.3 | Y | |
| fēnix 5X | 2017-01 | 2604, 2798 | MT3333 | 3.1 | Y | FCC teardown + F Tipi teardown |
| fēnix 5 | 2017-01 | 2697, 2796 | MT3333 | 3.1 | Y | FCC teardown |
| fēnix 5S | 2017-01 | 2544, 2797 | MT3333 | 3.1 | Y | FCC teardown |
| fēnix Chronos | 2016-08 | 2432, 2675 | MT3333 | 3.1 | Y | FCC teardown |
| fēnix 3 HR | 2016-01 | 2413, 2473 2474, 2475 2476, 2477 |
MT3333 | 1.4 | - | FCC teardown + Red Turtle teardown |
| fēnix 3 | 2015-01 | 2050, 2188 2189, 2293 2407, 2408 |
MT3333 | 1.4 | - | FCC teardown + F Tipi teardown + iFixit teardown |
| fēnix 2 | 2014-03 | 1967 | MT3333 | - | - | |
| fēnix | 2012-07 | 1551 | MT333x | - | - | FCC teardown |
Alternative product number(s) are APAC variants.
The MT333x in watches prior to 2013 was likely to be the MT3339 or MT3337.
Additional notes about the Mediatek chipsets are available on another page.