Garmin tactix® 8 – 51 mm, AMOLED

Sleep Score and Insights
Battery life (smartwatch mode) Up to 29 days (13 days always-on)
Built-in mapping
Pulse Ox Blood Oxygen Saturation
Garmin ECG App
LED flashlight
Garmin Pay™
Multi-band GPS
Music storage
Make calls and send texts via voice
Training Readiness
Training Status
Watch display type AMOLED
Touchscreen
Water rating 10 ATM

Strap material
Nylon and silicone

Lens material
Sapphire crystal

Bezel material
Titanium

Case material
Fiber-reinforced polymer with titanium rear cover

QuickFit™ watch band compatible
Included (26 mm)

Physical size
51 x 51 x 14.7 mm

Fits wrists with the following circumference:
Silicone Band : 127-210 mm
UltraFit Band : 127-225 mm
Leather Band : 135-213 mm
Metal Band : 135-225 mm

Weight
92 g (case only: 64 g)

Leakproof inductive buttons
Yes

Built-in speaker/microphone
Yes

Display Size
35.56 mm (1.4″) diameter

Display Resolution
454 x 454 pixels

Colour display
Yes

Large font option
Yes

Battery type
Lithium ion

Battery life
Smartwatch: Up to 29 days (13 days always-on)
Battery Saver Watch Mode: Up to 41 days
GPS Only: Up to 84 hours (65 hours always-on )
All Satellite Systems: Up to 68 hours (54 hours always-on)
All Satellite Systems + Multi-band: Up to 62 hours (49 hours always-on)*
All Satellite Systems + Music: Up to 18 hours
Max Battery GPS: Up to 145 hours
Expedition GPS: Up to 31 days
*Assuming typical use with SatIQ technology

Charging method
Garmin proprietary plug charger

Memory/history
32 GB

Time/date
GPS time sync
Automatic daylight saving time
Alarm clock
Smart wake alarm
Timer
Stopwatch
Sunrise/sunset times

Wrist-based heart rate (constant, every second)
Resting heart rate
Abnormal Heart Rate Alerts Yes (high and low)
Respiration Rate
Fitness Age
Body Battery™ Energy Monitor
All-day Stress
Relaxation Breathing Timer
Breathwork
Sleep Yes (Advanced)
Sleep coach
Breathing variations
Nap detection
Hydration Yes (in Garmin Connect™ and optional Connect IQ™ widget)
Women’s Health Yes (in Garmin Connect™ and optional Connect IQ™ widget)
Health Snapshot
Skin temperature
JET LAG ADVISER

GPS
GLONASS
Galileo
QZSS
BeiDou
SatIQ™ Technology
Garmin Elevate™ wrist heart rate monitor
Pulse Ox Blood Oxygen Saturation Monitor
Barometric altimeter
Compass
Gyroscope
Accelerometer
Thermometer
Ambient light sensor
Depth sensor

Connectivity BLUETOOTH®, ANT+®, Wi-Fi®
Connect IQ™ (downloadable watch faces, data fields and apps)
On-device Connect IQ™ Store
Smart Notifications
Text response/reject phone call with text (Android™ only)
View images from notifications on watch (Android™ only)
Morning report
Evening report
Calendar
Weather forecasts
Realtime settings sync with Garmin Connect™ mobile
Battery Saver – customisable low power watch
Controls smartphone music
Plays and controls watch music
Find my phone
Find my watch
Find My Phone during GPS activity
Compatible with Garmin Messenger app
Smart trainer control
Compatible with Garmin Connect™ Mobile
Smartphone compatibility iPhone®, Android™
Stocks
Bluetooth phone calling and voice assistant support
Voice command
Red shift mode
Garmin Share
Passcode
Calculator

Daily Suggested Workout – Running (Pace and Heart Rate Based)
Daily Suggested Workout – Cycling (Pace and Heart Rate Based)
Garmin Running Coach
Garmin Running Coach Experts
Garmin Cycling Coach
Garmin Coach – Prebuilt Cycling Plans
Garmin Coach – Strength
Garmin Triathlon Coach
Multisport workouts
Cardio workouts
Strength workouts
HIIT workouts
Yoga workouts
Pilates workouts
On-screen workout animations
On-Screen Workout Muscle Map

Gym
Strength, HIIT, Cardio, Elliptical Training, Stair Stepping, Floor Climbing, Indoor rowing, Jump Roping

Multisport
Swimming/Running, Triathlon

WELLNESS
Walking, Pilates, Yoga, Indoor Walking

INDOOR RUNNING
Treadmill Running, Indoor Track Running, Virtual running

Outdoor running
Running, Outdoor Track Running, Trail Running, Ultra Running, Obstacle Racing

Outdoor recreation
Hiking, Rucking, Indoor Climbing, Bouldering, Climbing, Hunting, Horseback Riding, Golfing, Disc Golf, Archery

Cycling
Biking, Road biking, Mountain Biking, Gravel biking, Bike commuting, Bike touring, eBiking, eMountain Biking, Indoor Biking, Cyclocross, BMX

Swim Pool
Swimming, Open Water Swimming

On the water
Stand Up Paddleboarding, Rowing, Kayaking, Surfing, Kiteboarding, Windsurfing, Fishing, Boating, Sailing, Water Skiing, Wakeboarding, Wakesurfing, Tubing, Snorkeling, Whitewater

Motor sports
Motorcycling, Overlanding, Motocrossing, ATVing, Snowmobiling

Racket sports
Tennis, Pickleball, Badminton, Squash, Table Tennis, Padel, Platform Tennis, Racquetball

Snow & Winter
Skiing, Snowboarding, Backcountry Snowboarding, XC Classic Skiing, XC Skate Skiing, Backcountry Skiing, Ice Skating, Snowshoeing

Sport profiles
Basketball, Volleyball, Field Hockey, Ice Hockey, Football, American Football, Lacrosse, Rugby, Ultimate Disc, Cricket, Softball, Baseball

In the ring
Boxing, Mixed martial arts

Dive
Scuba Diving (single gas), Apnea Diving, Depth App

Other activity profiles
Flying, Jumpmaster, Tactical, Inline Skating

Incident Detection during select activities
Incident detection alert on phone for wearables
Assistance
Live Event Sharing

Ballistics solver
Dual grid coordinates
KILL SWITCH
Night vision mode
Stage Timer
Stealth mode

Gaming activity
GameOn™ app compatible

Dive activity maximum operating depth
40 meters

Single-gas mode
Yes

APNOEA mode
Yes

Decompression model
Bühlmann ZHL-16c w/ Gradient Factors

Nitrox support
Yes

Gas mixes
Air, Nitrox (21-40% Oxygen)

PO2
Up to 1.6 with customisable Deco settings

Auto start/end dive
Yes

Custom end-dive timeout
Yes (20 sec to 10 min)

Safety Stop
Yes (customisable Off/3min/5min)

Deep Stops
Yes (using custom Gradient Factors)

Customisable conservatism
Yes (Low/Medium/High)

Dive ascent/descent rate indicator
Yes

Automatic altitude adjustment
Yes

No fly time
Yes

Dive planner
Yes (Basic NDL & Gas Planner)

Tides
Yes

Backlight
Yes (configurable intensity; always on)

Automatically saves dive entry and exit locations
Yes

Sync dive log to Garmin Dive™ Mobile app
Yes

Alerts & alarms
Yes (vibration only)

3-axis dive compass
Yes (with adjustable heading, quick change to 90R, 90L, and Reciprocal. Indicates degrees and direction back to set heading)

Missed Deco Lockout
Yes (can be disabled prior to dive with user acknowledgement)

Surface diver status widget
Yes (surface Interval, no fly time, N2 loading, CNS, OTU, and Tissue Compartment status)

Worldwide airport database(s)
3-axis compass with HSI (horizontal situation indicator)
Multiple time zones with Zulu/UTC
Moving Map with aviation airports, navaids, roads, bodies of water and more
Worldwide NAVAID and Intersection database(s)
In-flight Pulse Ox
METAR (Meteorological Aerodrome Report)
TAF (Terminal Aerodrome Forecast)

Wearable trolling motor remote

Step counter
Move alerts (displays on device after a period of inactivity; walk for a couple of minutes to reset it)
Auto goal (learns your activity level and assigns a daily step goal)
Calories Burned
Floors climbed
Distance travelled
Intensity minutes
TrueUp™
Move IQ™
Garmin Connect™ Challenges app Yes (optional Connect IQ app)
Automatic rep counting

Customisable screen(s)
Downloadable training plans
Course guidance
HR Zones
HR Alerts
HR Calories
% HR Max
% HRR
Recovery Time
Auto Max HR
Race glance/widget
HRV Status
HRV stress test (measures your heart rate variability while standing still, for 3 minutes, to provide you with an estimated stress level; the scale of this is 1 to 100; low scores indicate lower stress levels) Yes (with compatible accessory)
HR Broadcast (broadcasts HR data over ANT+® to paired devices)
Respiration Rate (During Exercise) Yes (with compatible accessory)
GPS speed and distance
Customisable activity profiles
Auto Pause® automatic timer halt
Interval training
Improved interval (includes open repeats, intervals data page, rest screen and auto detection)
Advanced workouts
Power Modes – customisable in-activity battery settings
HRM running pace and distance
Auto Lap® interval tracking feature
Manual lap
Rest timer
Configurable lap alerts
Heat and Altitude Acclimation
VO2 Max (Run)
VO2 Max (Trail Run)
Realtime Stamina
ENDURANCE SCORE
Load ratio
Training Load
Training load focus
Training Effect
Training Effect (Anaerobic)
Primary benefit (Training Effect labels)
Workout benefit
Customisable alerts
Voice alerts
Multisport auto transition
Finish time
Virtual partner
Race an activity
Multi-sport
Garmin Live Segments
Strava Live Segments
Round-trip course creator (running/cycling)
Trendline™ Popularity Routing
Touch and/or button lock
Shortcuts
Auto scroll
Activity history on watch
Physio TrueUp
Unified Training Status

Toe-to-Toe™ Challenges app