| Manufacturer | Garmin |
|---|---|
| Type | Premium tactical multisport GPS smartwatch |
| Series | tactix |
| Released | 21 February 2025 (announced 13 February 2025) |
| Price at launch | 47mm AMOLED: GBP 1,189 / USD 1,299.99 / EUR 1,399.99. 51mm AMOLED and 51mm Solar: GBP 1,279 / USD 1,399.99 / EUR 1,499.99. 51mm Solar Elite: USD 1,599.99 / EUR 1,699.99 |
| Predecessor | tactix 7 (Standard, Pro and AMOLED editions) |
| Successor | Not yet announced; a tactix 9 has appeared in a regulatory filing. See Release Radar. |
| Sizes | 47mm (medium), 51mm (large) |
| Variants | AMOLED (47mm, 51mm); Solar MIP (51mm); Solar Elite with the Applied Ballistics Elite solver (51mm); Cerakote Edition, 51mm AMOLED, added January 2026 |
| Colours | Black at launch. Cerakote Edition: Slate Grey, Olive Drab |
Specifications as at launch. Features and activity profiles reflect the latest Garmin software.
Expert opinion | What’s new | Specifications | Battery life | Features | Activity profiles | Comparisons | Quick answers | Further reading
Expert opinion
The Fenix 8 with a tactical, aviation and ballistics layer: stealth mode, kill switch, night vision mode, dual grid coordinates and the Applied Ballistics solver.
Over the tactix 7 it adds a 47mm size, speaker and microphone, a 40m dive rating, leakproof buttons and Garmin’s first rucking profile. The microphone matters where secure facilities ban recording devices.
Garmin tactix 8
Tactical adventure watch with maps, dive mode and a ballistics solver.
What’s new versus the tactix 7
Hardware
- New 47mm case size alongside the 51mm
- Built-in speaker and microphone for calls, voice commands and stage timer alerts
- Scuba and apnea diving to 40 metres
- Leakproof inductive buttons and a new sensor guard
- Solar lens on the 51mm Solar with up to 50% more solar power than previous models
- BeiDou added to the supported satellite systems
Software
- Dedicated rucking activity with pack weight, the first on a Garmin watch
- Refreshed graphics and a new integrated map interface with terrain contours
- Dynamic round-trip routing
- AB Quantum app compatibility
Specifications
The 51mm figures are shown in the table as the headline size. Differences for the 47mm are noted below.
47mm AMOLED: 47 x 47 x 13.8mm, display 35.56mm (1.4″) at 454 x 454, weight 73g (case 52g), QuickFit 22mm band.
| Specification | tactix 8 51mm AMOLED | tactix 8 51mm Solar |
|---|---|---|
| Display | ||
| Display type | AMOLED, always-on option | Sunlight-visible, transflective memory-in-pixel (MIP), always-on |
| Display size | 35.56mm (1.4″) | |
| Resolution | 454 x 454 pixels | 280 x 280 pixels |
| Lens | Sapphire crystal | Power Sapphire (solar charging) |
| Touchscreen | Yes | |
| Night vision mode | Yes | |
| Physical | ||
| Case size | 51mm (large) | |
| Dimensions | 51 x 51 x 14.7mm | 51 x 51 x 15.4mm |
| Weight | 92g (case 64g) | 95g (case 67g) |
| Bezel material | Titanium | |
| Case material | Fibre-reinforced polymer with titanium rear cover | |
| Buttons | Leakproof inductive | |
| Band | 26mm QuickFit, nylon and silicone | |
| Water rating | 10 ATM | |
| Dive rating | 40m (EN 13319) | |
| Military standard | Tested to MIL-STD-810 for thermal, shock and water resistance | |
| © the5krunner. Link required. | ||
| Sensors and positioning | ||
| GNSS | GPS, GLONASS, Galileo, QZSS, BeiDou, multi-band with SatIQ | |
| Heart rate | Garmin Elevate wrist heart rate monitor | |
| ECG | Yes, Garmin ECG App, region-dependent | |
| Pulse Ox | Yes | |
| Skin temperature | Yes | |
| Depth sensor | Yes, to 40m | |
| Other sensors | Barometric altimeter, 3-axis compass, gyroscope, accelerometer, thermometer, ambient light sensor | |
| Connectivity and storage | ||
| Connectivity | Bluetooth, ANT+, Wi-Fi | |
| NFC (Garmin Pay) | Yes | |
| Storage | 32GB | |
| Speaker and microphone | Yes, Bluetooth phone calls and voice commands | |
| Music | Yes, offline Spotify, Deezer, Amazon Music and YouTube Music | |
| Maps | Preloaded TopoActive multi-continent maps | |
| LED flashlight | Yes, white or green; in night vision mode white is disabled and green is dimmable | |
| © the5krunner. Link required. | ||
Battery life
Solar figures assume all-day wear with 3 hours a day outside at 50,000 lux for smartwatch, battery saver and expedition modes, and use at 50,000 lux for GPS modes. Multi-band figures assume typical use with SatIQ.
| Mode | 47mm AMOLED | 51mm AMOLED | 51mm Solar |
|---|---|---|---|
| Smartwatch | Up to 16 days (7 days always-on) | Up to 29 days (13 days always-on) | Up to 30 days / 48 days with solar |
| Battery saver watch | Up to 23 days | Up to 41 days | Up to 48 days / 107 days with solar |
| GPS Only | Up to 47 hours (37 hours always-on) | Up to 84 hours (65 hours always-on) | Up to 95 hours / 149 hours with solar |
| All Satellite Systems | Up to 38 hours (30 hours always-on) | Up to 68 hours (54 hours always-on) | Up to 68 hours / 92 hours with solar |
| All Systems + Multi-band | Up to 35 hours (28 hours always-on) | Up to 62 hours (49 hours always-on) | Up to 52 hours / 65 hours with solar |
| All Systems + Music | Up to 10 hours | Up to 18 hours | Up to 18 hours |
| Max Battery GPS | Up to 81 hours | Up to 145 hours | Up to 186 hours / 653 hours with solar |
| Expedition GPS | Up to 17 days | Up to 31 days | Up to 50 days / 118 days with solar |
| © the5krunner. Link required. | |||
Features
A full breakdown of Garmin platform features is available at Garmin features explained.
Tactical, aviation and diving
- Stealth mode, which stops storing and sharing GPS position and disables wireless connectivity
- Kill switch to erase stored data
- Night vision goggle mode, with further dimming and a blacked-out display
- Dual grid coordinates and projected waypoints
- Jumpmaster for HAHO, HALO and static-line jumps
- Stage timer with alerts through paired hearing protection or the speaker
- Applied Ballistics Ultralight solver preloaded; Applied Ballistics Elite on the Solar Elite
- AB Quantum app and Xero C2 chronograph compatibility
- Direct-To navigation, worldwide airport, NAVAID and intersection databases, HSI, and METAR, TAF and NEXRAD weather
- Scuba (single gas) and apnea diving with Bühlmann ZHL-16c gradient factors, Air and Nitrox to 40% oxygen
Plan
- Daily Suggested Workouts for running and cycling
- Garmin Coach plans for running, cycling, strength and triathlon
- Cardio, strength, HIIT, yoga and Pilates workouts with on-screen animations
- Course Planner with cut-off times, aid stations and checkpoints
- Morning Report and Evening Report
Prepare
- Training Readiness, Training Status and Training Load
- HRV Status and Recovery Time
- Body Battery, Sleep Coach and Breathing Variations
- Health Status and Health Snapshot
- Garmin ECG App, region-dependent
- Pulse Ox, including in-flight Pulse Ox
- Skin temperature
- Heat and altitude acclimation, and Jet Lag Adviser
- Lifestyle Logging and nap detection
Perform
- VO2 max, Endurance Score and Hill Score
- Real-Time Stamina
- Wrist-based running power and running dynamics, and Running Tolerance
- Running Economy and Step Speed Loss with the HRM 600
- PacePro, ClimbPro, grade-adjusted pace and Visual Race Predictor
- Rucking with pack weight, which can also be added to trail running, hiking and walking
- TopoActive maps, NextFork, Up Ahead, TracBack and Trendline popularity routing
- SkiView maps for more than 2,000 ski resorts and 43,000 preloaded golf courses
- Multisport auto transition
Connect
- Bluetooth phone calls and voice commands through the built-in speaker and microphone
- Smart notifications and Garmin Messenger app compatibility
- Garmin Pay contactless payments
- Music storage and playback from Spotify, Deezer, Amazon Music and YouTube Music
- Incident detection, assistance and live event sharing
- Connect IQ Store on the watch
- Garmin Share, Find My Phone and Find My Garmin
Activity profiles
| Category | Profiles |
|---|---|
| Running | Running, Outdoor Track Running, Trail Running, Ultra Running, Obstacle Racing, Treadmill Running, Indoor Track Running, Virtual running |
| Cycling | Biking, Road biking, Mountain Biking, Gravel biking, Bike commuting, Bike touring, eBiking, eMountain Biking, Indoor Biking, Cyclocross, BMX |
| Swimming | Pool Swimming, Open Water Swimming |
| Multisport | Swimming/Running, Triathlon |
| Gym and fitness | Strength, HIIT, Cardio, Elliptical Training, Stair Stepping, Floor Climbing, Indoor rowing, Jump Roping, Indoor Climbing, Boxing, Mixed martial arts, Indoor Walking, Pilates, Yoga, Mobility |
| Outdoor | Walking, Hiking, Rucking, Bouldering, Climbing, Hunting, Horseback Riding, Golfing, Disc Golf, Archery, Inline Skating |
| Other | Dive: Scuba Diving (single gas), Apnea Diving | Winter sports: Skiing, Snowboarding, Backcountry Snowboarding, XC Classic Skiing, XC Skate Skiing, Backcountry Skiing, Ice Skating, Snowshoeing | Water sports: Stand Up Paddleboarding, Rowing, Kayaking, Surfing, Kiteboarding, Windsurfing, Fishing, Boating, Sailing, Water Skiing, Wakeboarding, Wakesurfing, Tubing, Snorkeling, Whitewater | Team sports: Basketball, Volleyball, Field Hockey, Ice Hockey, Football, American Football, Lacrosse, Rugby, Ultimate Disc, Cricket, Softball, Baseball | Racket sports: Tennis, Pickleball, Badminton, Squash, Table Tennis, Padel, Platform Tennis, Racquetball | Motorsports: Motorcycling, Overlanding, Motocrossing, ATVing, Snowmobiling | Other: Flying, Jumpmaster, Tactical |
Garmin tactix 8
Tactical adventure watch with maps, dive mode and a ballistics solver.
Comparisons and upgrade guides
- Garmin tactix 8 compared to the Fenix 8 and tactix 7
- tactix 8 security concerns, and the upgrade case from the tactix 7
- Instinct 3 Tactical compared to the tactix 8
Quick answers
When was the Garmin tactix 8 released?
Garmin announced tactix 8 on 13 February 2025, and it was released on 21 February 2025. The launch price was GBP 1,189 or USD 1,299.99 for the 47mm AMOLED, and GBP 1,279 or USD 1,399.99 for the 51mm AMOLED and 51mm Solar.
Is the tactix 8 waterproof?
tactix 8 has a water rating of 10 ATM and a dive rating of 40m to EN 13319. It supports scuba and apnea diving to 40 metres.
Does the tactix 8 have maps?
Yes, tactix 8 has preloaded TopoActive multi-continent maps with NextFork, Up Ahead, TracBack and Trendline popularity routing. It also has worldwide airport, NAVAID and intersection databases.
Does the tactix 8 have a flashlight and ECG?
Yes, tactix 8 has a white or green LED flashlight, and in night vision mode the white light is disabled and the green light is dimmable. It also has the Garmin ECG app, which is region-dependent.
What sizes does the tactix 8 come in?
tactix 8 comes in 47mm and 51mm sizes. The 47mm AMOLED is 13.8mm thick, weighs 73g and takes a 22mm band, while the 51mm AMOLED weighs 92g and the 51mm Solar 95g, both with a 26mm band.
How long does the tactix 8 battery last?
Garmin rates the 51mm tactix 8 AMOLED for up to 29 days as a smartwatch and the 51mm Solar for up to 30 days, or 48 days with solar. The 47mm AMOLED lasts up to 16 days.
Further reading
- Rucking and pack weight on the tactix 8
- Garmin Fenix 8 specifications, the platform the tactix 8 is built on
- Garmin watch specifications
- Release Radar: upcoming Garmin watches
Related watches
Predecessor: Garmin tactix 7, the previous tactical model.
Also consider: Amazfit T-Rex Ultra 2, a 51mm titanium adventure watch with a sapphire-covered AMOLED display.
Small things I always use
- Garmin 90-degree charging adapter: Charges your Garmin from any USB-C cable. Essential when travelling. I use one.
- Body Glide: The blue anti-chafe stick swimmers and runners carry. I use it.
- Speedo earplugs: Fewer ear infections and no cold-water dizziness. I use them.
- Dryrobe Advance: My winter changing robe for open-water swims. I use one. A cheaper option is the AONYIYI changing robe.
- Maurten: Race fuel that stays easy on the stomach. I use them.
- Beet It Sport nitrate shots: Beetroot shots I take in the days before a race. I use them.
- Garmin charging puck: The quickest way to top up before a session. I use one.
- Injinji: Toe socks that stop rubbing, so you run more. I use them.
- Ultimate toe protectors: Stop black toenails on long runs. They work. I use them.
- Compressport R2 v2 calf sleeves: My calf sleeves of choice. I use them.
- Cellucor C4: My pre-workout before hard sessions.
- TPU tubes: Schwalbe Aerothan, Tubolito and Pirelli SmarTube. Light, tiny spares. I use all three.
- G8 insoles: Adjustable insoles that are good. I use them.
- Cycplus Cube: A 97g electric pump that gets a road tyre rideable in two minutes. I carry one. 5% off with code THE5KRUNNER.
Watches and sensors
- Polar H10: My daily driver for waking HRV.
- Polar Verity Sense: My backup arm-worn HR sensor.
- Nomad bedside charger: Charges my iPhone and Apple Watch overnight. I use it, and many of their bands.
- Train.Red: The best muscle oxygen sensor I’ve used.
- Tymewear: Accurate heart rate and reliable ventilatory zones. I use it to pace endurance rides over an hour.
- Garmin Forerunner 970: A pro-grade triathlon watch. I use this.
- Apple Watch Ultra 4: My daily smartwatch. No phone needed on rides.
- Garmin Fenix 9 Pro: I’ve just bought one.
On the bike
- Continental GP5000 for everyday riding, and Aero 111 on the front for special occasions.
- Helmets: Specialized S-Works Evade 3 for road riding, and Rudy Project Wing for TT-style races. I use both.
- Ravemen FR300: A front light that mounts under your Garmin or Wahoo. I use one.
- Wahoo TRACKR Radar: I use it on one bike and Varia on the other. They perform the same.
- Garmin Varia RTL515: Radar that warns you of cars from behind. I use this model.
- Wahoo ELEMNT Roam 3: The bike computer that’s easy to use. I use mine on most rides.
- Favero Assioma Pro RS2: Accurate power pedals that swap easily between bikes. I use this model.
Home and indoor training
- NPE Runn: Makes my basic treadmill smart, sending more accurate speed and distance to my watch and Zwift. I use it.
- Google Wifi: Keeps Zwift connected in my pain cave. I use it.
- Apple TV 4K: Zwift on the big screen. I use two.
- Google Nest Doorbell (wired, 2nd gen): My video doorbell, running in both Google Home and Apple Home. I use it.
Health, recovery and sleep
- FreeStyle Libre 3 Plus: Shows how my blood sugar responds to diet.
- hDrop: Measures my sweat loss in summer and indoors.
- Fourth Frontier Zone: Checks my heart under load in hard sessions.
- Oura Ring 5: My partner’s recovery tracker of choice.
- Eight Sleep: A cooling mattress cover my partner and I use nightly.
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