Garmin Tactix 8
A trail and outdoor, multisport GPS watch by Garmin, released in 2025.
Black
Watch profile
- GPS
- 47 h
- maps
- yes
- screen
- AMOLED
- weight
- 73 g
- water rating
- 10 ATM
Spec sheet
Every value is read on the brand’s page; hover it to see its source and date.
Battery
Will it last your ultra, your week?
- Smartwatch mode
- 16 days
- GPS battery life
- 47 h
- Multi-band GPS battery life
- 35 h
- Solar charging
- no
Navigation
For trail, ultra and the mountains
- Onboard maps
- yes
- Course guidance
- yes
- Multi-band GNSS
- yes
- Back to start
- yes
Screen and size
Readability, comfort on the wrist, swimming
- Screen type
- AMOLED
- Screen size
- 1.4″
- Resolution
- 454 x 454 pixels
- Touchscreen
- yes
- Glass
- sapphire
- Case
- 47 mm
- Thickness
- 13.8 mm
- Weight
- 73 g
- Case material
- polymer
- Bezel
- titanium
- Water rating
- 10 ATM
Sensors
How precise the measures are
- Wrist heart rate
- yes
- Pulse oximeter (SpO2)
- yes
- Barometric altimeter
- yes
- Compass
- yes
- ECG
- yes
Training
For the runner, the triathlete, Hyrox
- Load and recovery
- yes
- Running power
- yes
- Multisport profiles
- yes
- Triathlon mode
- yes
- Strength and HIIT
- yes
- Structured workouts
- yes
- Training plans
- yes
Everyday
Living with it, outside workouts
- Onboard music
- yes
- Contactless payment
- yes
- Wi-Fi
- yes
- Flashlight
- yes
Spec sheets read at: garmin.com
Who is it for?
The sports the brand announces, and the features that go with them.
Running
- Load and recovery: yes
- Running power: yes
- Structured workouts: yes
- Training plans: yes
Trail running
- Onboard maps: yes
- Multi-band GNSS: yes
- Barometric altimeter: yes
- GPS battery life: 47 h
Triathlon
- Triathlon mode: yes
- Multisport profiles: yes
- Water rating: 10 ATM
Hyrox & hybrid training
- Strength and HIIT: yes
- Wrist heart rate: yes
Tactix 7 → Tactix 8: what changes
The values the brand publishes, side by side.
- Smartwatch mode−12 days
28 days16 days
- GPS battery life−42 h
89 h47 h
- Screen type
MIP (transflective)AMOLED
- Case−4 mm
51 mm47 mm
- Thickness−1.1 mm
14.9 mm13.8 mm
- Weight−16 g
89 g73 g
Comparable watches
The closest on battery life, screen, weight, water rating and list price.
Frequently asked questions
How long does the Tactix 8’s battery last with GPS?
Up to 47 h with GPS according to Garmin, and up to 35 h in multi-band GPS.
Is the Tactix 8 waterproof?
Garmin rates it 10 ATM.
Does the Tactix 8 have maps?
Yes: Garmin announces onboard maps.
Which sizes does the Tactix 8 come in?
In a 47 mm, 51 mm case according to Garmin.