Garmin Fenix 8 Pro (microLED) buyer's guide - everything you need to know Garmin's latest additions to the Fenix series are two new Pro AMOLED models and one new Pro microLED model. All are deemed 'pro' models and thus share the same newly added connectivity features. I'll come to this in more detail in a minute. At first, some of the connected features seem like existing ones. Today's big difference is that Garmin has made it possible to leave your smartphone at home and still use those features straight from the watch. Garmin Fenix 8 Pro - a review of the model options There are 3 options, all of which share the Pro features $1,199.99 - Garmin Fenix 8 Pro 47mm (AMOLED) $1,299.99 - Garmin Fenix 8 Pro 51mm (AMOLED) $1,999.99 - Garmin Fenix 8 Pro 51mm microLED That's a $200 price hike compared to the non-Pro version, and the 41mm option has been culled. [sc name="scgarminfenix8pro"][/sc] Garmin Fenix 8 Pro - What's new The headline changes are the new LTE and satellite-connected features on the watch, plus the option of a microLED display on the 51mm version. Pro Features LTE Connectivity (LTE-M) - SOS/Emergencies, CheckIns, Weather, send/receive texts, send/receive calls, LiveTrack, Voice messages (transcribed), Voice calls Satellite Connectivity (via SKYLO) - SOS/Emergencies, CheckIns, Weather, send/receive texts microLED display option on the 51mm case version, 4,500 nits, 454x454px resolution Significant decreases in battery life (details further below) Example: 49 hours falls to 15 hours for AOD mode, maximum satellite accuracy with no LTE/Satellite. Fenix 8 (old) 51mm AMOLED, compared to Fenix 8 Pro 51mm microLED Sapphire lens on all models DLC Titanium on all models The 51mm case model is 2.8mm thicker and 3g heavier than the older Fenix 8 51mm 51mm microLED 51 x 51 x 17.5 mm, 93 g (case only: 68 g) 51mm AMOLED 51 x 51 x 16.5 mm, 90 g (case only: 65 g) The 47mm case model is 2.2mm thicker and 4g heavier than the older Fenix 8 51mm (titanium) 47mm AMOLED 47 x 47 x 16 mm, 77 g (case only: 56 g) Lactate threshold is stated to no longer require a chest strap The recovery time algorithm is stated as improved Colour shift and ovulation estimates are officially stated as new features inReach required for all new features, but the inReach Activation fee is waived. There are a lot of changes beneath these headlines. I'll go through different aspects one by one. Garmin inReach subscription - you NEED this You'll need an inReach subscription to get the new connection abilities. There is no way around this. The inReach subscription is entirely justified, as running that service adds value to you and costs to Garmin. It's entirely separate from the Connect+ subscription paywall, which is wholly unjustified. https://the5krunner.com/2025/03/27/garmin-connect-subscription-shit-storm-swearing-allowed/ Your Garmin device has a fixed activation cost regardless of which plan you opt for. Surprisingly, this is waived for Fenix 8 Pro. The plans have a base monthly cost, starting at £7.99, $7.99 or 9,99€. Each service you use has a further usage cost; however, that cost is lowered or removed if you opt for a higher, fixed monthly subscription - a more expensive plan. The whole structure makes sense from a cost perspective, but it isn't very clear and harks back to the early days of mobile phone plans. Garmin will eventually simplify all of this. LTE and Satellite Tech With many recent changes added to the capabilities of the earlier Fenix 8, Garmin seems to have taken its tech to a new level for the Fenix 8 Pro. The satellite constellations used have changed from Iridium to the Skylo geostationary network. This is perhaps not a surprising move, as Google Pixel's recent satellite service switched to use the same Skylo constellation, managed through Garmin's Response Center. Furthermore, a more advanced, energy-efficient version of 4G LTE is used than was previously used on some watches. This time around, Garmin is using the 4G LTE-M. You do NOT sign up for a data service via your regular cell phone provider. When you get the InReach subscription, you automatically access the entire global LTE-M network, which is continually expanding and already has over 100 active national networks. As examples, LTE-M covers 3 traditional US networks (T-Mobile, AT&T, US Cellular) and one from the UK (Vodafone). Satellite Availability: Skylo covers the U.S., parts of Canada, and most of Europe. However, availability worsens as you get further North, possibly also in the mid-Atlantic. LTE Availability: This is consistently improving; the latest position is shown here. Let's go through the new features. Live Track & Check-Ins Live Track is an old Garmin feature. What's changed today is that it works over your inReach subscription without a phone. Live track works over LTE or satellite ie it works off-grid. There are additional costs if you use LiveTrack over satellite. An interesting test for LiveTrack over satellite would be in a northern Scandinavian forest. Would the latitude and tree cover effectively make Livetrack useless? When tracked over LTE, your followers should get frequent positional updates (I'm unsure of the polling frequency - it's 10 minutes on satellite). However, you will need the standard inReach subscription plan to avoid excessive costs from Livetracking over satellite. The check-in feature is welcomed but half-baked in its implementation. You can store and MANUALLY send one of three saved standard texts to friends and family. 'Just going out for a run' or 'I'm back' could be customised versions you save. This feature needs improving to automatically send an 'I'm home' when the watch detects you at your home location, and a customised check-in at a particular time, such as sunset, is also helpful to let someone know you're almost home...or not. Text Messages Garmin recently enabled text messaging in some of its newer 2024/25 models. However, that feature required a connected phone to be present. With your inReach subscription, you can send text messages over LTE or satellite, although the latter has a per-use charge on all but the most expensive inReach plan. Rich Messaging Images/photos can also be sent similarly to text on the inReach service, but they are not currently available with the Fenix 8 Pro. Make & Take Calls This feature is not what you're hoping for. You make calls using the Garmin Messenger (Calls) app on your watch, and you set this up from the Messenger smartphone app. Sounds good? Well... You can only call other people using the Messenger app. That can be someone else with the Messenger app on their Fenix 8 Pro or your friends and family back home using Garmin Messenger on their smartphone. Since only a small number of people use Garmin Messenger, the feature is only useful in a very restricted number of scenarios. Emergency SOS Thankfully and sensibly, the SOS service incurs no additional cost if you have an active subscription. The SOS can go out over either LTE or satellite. [gallery ids="102562,102561,102560"] Battery Life Bump Fails to Materialise The chart below shows that on a like-for-like basis, compared to its predecessor, the new AMOLED Pro version broadly takes a 10% hit on battery life in exercise modes. This isn’t easy to explain, as the examples shown do not involve the power drain of an LTE connection, and they have the older (same?) display tech. [caption id="attachment_102571" align="aligncenter" width="1024"] angled display view[/caption] Garmin claims this is the brightest smartwatch ever built. At 4500 nits it is! However, it is possible to get 4500 to 6000 nits on an older AMOLED display; some smartphones already have this brightness level. So Garmin is laudibly experimenting with new display technology and introducing brightness for niche-case sunny workout scenarios - fine. One of the tech's other benefits is viewability at angles, which is a big improvement too, but again, in niche case scenarios (it also makes typing in your passcode more visible to others) When we add the microLED display’s effect, there are further hits to battery life. The hits vary, but a 30-40% generalisation hides more serious cuts for the exercise modes, with AOD (always on display) significantly worsening the figures to more like 70%. Here are the exact figures: Battery life ‘Up to’ hours (always-on) fēnix 8 Pro – 51 mm, MicroLED $1,999.99 fēnix 8 Pro – 51 mm, AMOLED $1,299.99 fēnix 8 – 51 mm, AMOLED $1,099.99 Battery Saver Watch Mode: 14 days 34 days 41 days Smartwatch: 10 days (4 days) 27 days (15 days) 29 days (13 days) GPS Only: 44 hours (18 hours) 78 hours (56 hours) 84 hours (65 hours) All Satellite Systems: 37 hours (16 hours) 60 hours (47 hours) 68 hours (54 hours) All Satellite Systems + Multi-band: 34 hours (15 hours) 53 hours (41 hours) 62 hours (49 hours) All Satellite Systems + Multi-band + LTE Livetrack: 17 hours (10 hours) 21 hours (19 hours) – All Satellite Systems + Multiband + Music: 19 hours (11 hours) 23 hours (21 hours) 18 hours All Satellite Systems + Multiband + Music + LTE Livetrack: 13 hours (9 hours) 15 hours (14 hours) – Max Battery GPS: 53 hours 123 hours 145 hours Expedition GPS: 8 days 24 days 31 days Who makes the microLED Display? AU Optronics (AUO) is the manufacturer and the first company to mass-produce wearable microLED panels. https://the5krunner.com/2025/09/05/garmin-battery-gate-why-auo-microled-panels-drain-battery-industry-expert-speaks/ Garmin Fenix 8 Pro Opinion These updates to Fenix 8 warrant the PRO label. This is a big step forward for Garmin, likely meeting the superficial hopes of everyone who suspected the LTE feature was on the way. The addition of satellite connectivity in the watch is a first for a serious adventure/hiking watch and will come as a pleasant surprise for others. Against that is the huge disappointment of microLED. Sure, the display looks visually impressive, even from tight angles, but the resulting battery performance is a step backwards, relegating the Fenix's microLED version in many people's eyes to the weekend-warrior category rather than to adventure. [sc name="scgarminfenix8pro"][/sc] That said, these hardware updates warrant the PRO label. The hardware and ecosystem have seen a significant boost, perhaps partially offsetting decreased screen performance. This is a platform for the future. Garmin has refreshed and revitalised the connected features and ecosystem that supports them. Sure, some aspects can be improved further, but once again, Garmin has kept ahead of the competition in how its connected features are used for sports, adventure, and fitness activities. There are still issues with how these features can (or, more correctly, can't) be used with your smartphone's broader smart feature set, and it might seem odd that Garmin is creating its own separate "cell" network. The flip side is that it had no other choice. Instead of waiting for the market to evolve or regulatory pressures to work in its favour, Garmin has acted positively and decisively. There is no way that Suunto or Coros will equal this connectivity for many years - Apple Watch Ultra 3 is the only competitor in that sense. The downside is the cost. But I guess if you can afford a $2,000 sports watch, you can afford a $10 monthly subscription. Even then, anyone in harm's way knows their life is worth $10 a month. Fenix 8 Pro - I'm impressed and surprised. [sc name="scgarminfenix8pro"][/sc] Resources Manual - Garmin Fenix 8 Series Manual (includes Pro and microLED) Product Page - Garmin Fenix 8 Pro edition product page Press Release - Fenix 8 Pro Launch Press Release
