Which is better for running and triathlon?

The Fenix 8. It adds multi-band GPS, multisport and triathlon modes, training readiness and topo maps for open courses. The Venu 3 handles running and 30 sports apps well but lacks the race-grade navigation.

The Fenix 8, at up to 29 days in smartwatch mode versus up to 14 on the Venu 3. The Fenix 8 also has a larger battery and a tougher case built for outdoor use.

Is the Fenix 8 worth stepping up to?

Only if you dive, hike off-grid or race seriously. For sleep tracking, calls and gym workouts, the Venu 3 covers the same core health features in a lighter watch.

Which is better for sleep and health tracking?

The Venu 3 is the more focused health watch, with a sleep coach, nap tracking, an ECG app and body battery. The Fenix 8 tracks sleep, SpO2 and stress too but centers on training load.

Can both make calls from the wrist?

Yes. Both have a built-in speaker and mic for calls when paired to a compatible phone, and both support Garmin Pay and music storage.

Which is better for swimming and diving?

The Fenix 8. It is rated 10 ATM and dive capable to 40 m with metal buttons. The Venu 3 is waterproof for pool and open-water swimming but not dive rated.

Garmin Venu 3 Smartwatch vs Garmin Fenix 8

Buy the Venu 3 for everyday health tracking, sleep coaching, calls and long battery life in a light 45 mm case. Buy the Fenix 8 if you dive, run trails, or want topo maps, multi-band GPS, a flashlight and a 40 m dive rating. Reviewers rate both highly, but the Fenix 8 sits in a tougher, heavier class built for multisport and off-grid use, while the Venu 3 is the easier daily watch.

Choose the Garmin Venu 3 if you want a light everyday watch with sleep coaching, an ECG app, body battery and up to 14 days of battery for gym, running and general wellness.
Choose the Garmin Fenix 8 if you swim, dive, hike or race triathlons and need multi-band GPS, topo maps, a built-in flashlight and a 10 ATM dive rating.

Prices

Garmin Venu 3 Smartwatch: $199.00 at Walmart (checked today)
Garmin Fenix 8: $749.99 at The Home Depot (checked today)
Difference: the Garmin Venu 3 Smartwatch is $550.99 cheaper than the Garmin Fenix 8 today

What separates them

	Garmin Venu 3 Smartwatch	Garmin Fenix 8
GPS	Standard GPS, GLONASS and Galileo	SatIQ multi-band GPS plus QZSS and BeiDou
Water resistance	Waterproof for swimming	10 ATM, dive rated to 40 m
Maps and navigation	No topo maps; basic route tracking	TopoActive maps, ABC sensors, round-trip routing
Battery life	Up to 14 days in smartwatch mode	Up to 29 days in smartwatch mode
Weight and size	45 mm, lighter on the wrist	About 3.2 oz, thicker 0.6 in case
Storage	8 GB for music	32 GB for music and maps
Extras	Sleep coach, ECG app, body battery, HRV status	LED flashlight, strength plans, training readiness
Ratings	4.6 from about 4,000 ratings	4.9 from about 72 ratings

Specs compared

Spec	Garmin Venu 3 Smartwatch	Garmin Fenix 8
Hardware Sensors	GPS	GPS
GPS	Yes	SatIQ™ technology with Multi-Band GPS.
Heart Rate Monitoring	Yes	Yes
Sleep Monitoring	Yes	Yes
Step Counting	Yes	Yes
Calorie Computation	Yes	Yes
Tracking Feature Type	Activity tracking	Location tracking (GPS)
Case Material	Stainless steel (bezel)	Plastic, Stainless Steel
Case Size	45 mm	51 mm, 47 mm
Activities Tracked	Health and fitness features	Strength training
Tracking Type	GPS	GPS
Water Resistance	Yes	Dive capability

Show all 40 specs

Spec	Garmin Venu 3 Smartwatch	Garmin Fenix 8
Waterproof	Yes	Leakproof buttons
Scratch Resistance	Corning Gorilla Glass 3	Sapphire
Shock Resistance	Superior impact protection (with Nano glass scr…	Yes
Display Diagonal Size	1.4 in	1.4 in
Display Type	AMOLED	AMOLED
Touch Screen	Yes	Yes
Display Features	Color display	Always-on display
Step Counter	Yes	Yes
Bluetooth	Yes	Yes
Cellular

Garmin Venu 3 Smartwatch vs Garmin Fenix 8

Prices

Garmin Venu 3 Smartwatch vs Garmin Fenix 8

Prices