Average score
Product 1: CMF Watch 3 Pro
3.5
Product 2: Garmin Forerunner 255
4.2
activity auto-detection
Product 1: CMF Watch 3 Pro
3.9

Auto-detection is available for select activities and generally worked for basic walks, but reviewers still suggested starting workouts manually when accuracy matters.

Product 2: Garmin Forerunner 255
4.3

Reviews describe automatic run, walk, stand, and exercise detection as a useful training aid, especially for interval and mixed workouts.

app ecosystem
Product 1: CMF Watch 3 Pro
4.3

The companion setup plays well with major fitness platforms like Strava, Apple Health, and Google Fit, giving the watch a decent broader ecosystem story.

Product 2: Garmin Forerunner 255
3.8

The app ecosystem is decent rather than huge, with Connect IQ watch faces and apps available but at least one review calling the app selection modest.

band quality
Product 1: CMF Watch 3 Pro
3.0

Band quality is mixed: one review liked the soft silicone strap, while another called it floppy.

Product 2: Garmin Forerunner 255
4.5

The strap is consistently praised for stretch, hole spacing, and buckle security, giving it a secure, adjustable feel.

battery life
Product 1: CMF Watch 3 Pro
4.2

Battery life is a major strength, regularly landing around several days of heavier use and stretching much longer with lighter settings.

Product 2: Garmin Forerunner 255
4.6

Battery life is one of the watch’s clearest strengths, with multiple reviewers reporting week-plus endurance and strong GPS runtimes.

blood oxygen tracking
Product 1: CMF Watch 3 Pro
4.1

SpO₂ monitoring is included and broadly worked as expected in review coverage, though most reviews treated it as a basic health feature rather than a standout.

Product 2: Garmin Forerunner 255
4.0

Pulse Ox support is present and integrated into the broader health stack, though reviewers treat it more as a useful metric than a headline feature.

Bluetooth connectivity
Product 1: CMF Watch 3 Pro
4.7

Bluetooth connectivity was stable in the direct connectivity-focused review.

Product 2: Garmin Forerunner 255
4.5

Bluetooth support is strong for phone pairing, headphones, and audio accessories, helping the watch work well for music and sync tasks.

brightness
Product 1: CMF Watch 3 Pro
3.5

Brightness is acceptable indoors and in most daily use, but multiple reviews still wished the panel had more headroom.

Product 2: Garmin Forerunner 255
3.0

Brightness is serviceable but not a standout, with reviewers noting the screen is functional yet less vivid than brighter AMOLED alternatives.

build quality
Product 1: CMF Watch 3 Pro
3.5

Build quality beats expectations for the price in some reviews, but others still found the overall construction cheap-feeling.

Product 2: Garmin Forerunner 255
4.2

Build quality comes across as solid and practical, with reviewers calling the watch tough, robust, and durable in daily use.

button controls
Product 1: CMF Watch 3 Pro
3.9

The rotating crown adds useful control and tactility, even if its size and implementation are not perfect.

Product 2: Garmin Forerunner 255
4.5

The five-button control scheme is widely seen as dependable and practical, especially during workouts or bad weather.

call handling
Product 1: CMF Watch 3 Pro
4.0

Bluetooth calling is solid for the class, with clear enough audio and microphone performance that callers often could not tell it was a watch.

Product 2: Garmin Forerunner 255
1.8

Call handling is limited: reviewers note that the watch can surface phone activity and messages but does not support actual calling.

calorie tracking usefulness
Product 1: CMF Watch 3 Pro
4.2

Workout readouts include calories and heart-rate zones, giving casual users useful post-workout context.

Product 2: Garmin Forerunner 255
No score yet
charging convenience
Product 1: CMF Watch 3 Pro
2.1

Charging convenience is poor because the proprietary magnetic connector is easy to misalign or knock loose.

Product 2: Garmin Forerunner 255
3.5

Charging is straightforward, but convenience is held back by Garmin’s proprietary cable even if the connector fits securely.

charging speed
Product 1: CMF Watch 3 Pro
3.5

Charging speed is decent rather than class-leading, with full charges usually taking around an hour and a half.

Product 2: Garmin Forerunner 255
4.3

Charging speed is good, with reviews mentioning a full charge in a couple of hours and a quick 50% top-up.

coaching features
Product 1: CMF Watch 3 Pro
4.3

Running coaching is a clear plus, with multiple reviews highlighting guided plans and helpful goal-based training support.

Product 2: Garmin Forerunner 255
4.5

Coaching features are a major strength thanks to Garmin Coach, suggested workouts, and race-focused guidance.

comfort
Product 1: CMF Watch 3 Pro
4.3

Comfort is good overall, with reviewers calling it lightweight and easy to wear for long stretches.

Product 2: Garmin Forerunner 255
4.5

Comfort is consistently excellent, with reviewers repeatedly calling the watch lightweight and easy to wear all day and overnight.

companion app quality
Product 1: CMF Watch 3 Pro
3.5

The Nothing X app is generally cleaner and more polished than older CMF software, but some reviews still cited dull visuals, missing workout detail, or battery drain.

Product 2: Garmin Forerunner 255
4.7

Garmin Connect is highly rated, with reviewers calling it easy to navigate, powerful, and among the best GPS-watch companion apps.

contactless payments
Product 1: CMF Watch 3 Pro
1.0

NFC payments are missing, so tap-to-pay is not part of the experience.

Product 2: Garmin Forerunner 255
4.3

Garmin Pay is a useful addition that makes quick wrist payments practical during commutes and workouts.

cross-platform compatibility
Product 1: CMF Watch 3 Pro
4.2

Cross-platform support is strong for a budget watch, with multiple reviews confirming workable Android and iPhone pairing.

Product 2: Garmin Forerunner 255
4.3

The watch works across both Android and iOS, though some notification behavior varies by phone platform.

customization options
Product 1: CMF Watch 3 Pro
4.4

Customization is a strong area thanks to swappable bands, watch-face tools, and shortcut options, though some widget controls remain limited.

Product 2: Garmin Forerunner 255
4.7

Customization is extensive, covering data screens, watch settings, faces, and other interface elements.

display quality
Product 1: CMF Watch 3 Pro
4.4

The display is widely liked for sharpness, size, and overall polish, especially at this price.

Product 2: Garmin Forerunner 255
3.8

Display quality is good for readability and sport use, though the MIP screen is less flashy than premium AMOLED rivals.

durability
Product 1: CMF Watch 3 Pro
4.3

The only direct durability evidence was positive, with the body holding up well through daily wear.

Product 2: Garmin Forerunner 255
4.3

Durability is strong overall, with reviews describing the watch as tough and reporting good long-term wear.

fit
Product 1: CMF Watch 3 Pro
2.5

Fit is more divisive because the large case can overwhelm smaller wrists.

Product 2: Garmin Forerunner 255
4.3

Fit is easy to dial in thanks to the strap design and multiple size choices, and reviewers found it secure on wrist.

fitness tracking accuracy
Product 1: CMF Watch 3 Pro
2.9

Fitness-tracking accuracy is the biggest split: casual tracking looked acceptable to some reviewers, but others found the data unreliable, especially for harder use.

Product 2: Garmin Forerunner 255
4.5

Fitness tracking is broadly praised for delivering accurate workout data and useful performance detail across core sports.

GPS accuracy
Product 1: CMF Watch 3 Pro
4.3

Dual-band GPS was widely praised for quick lock times and strong route accuracy, though one scientific review noted low recording frequency and possible distance issues.

Product 2: Garmin Forerunner 255
5.0

GPS accuracy is outstanding and one of the watch’s biggest selling points, with multiple reviews calling it excellent or best-in-class.

health tracking accuracy
Product 1: CMF Watch 3 Pro
3.0

Health tracking looked reliable enough for everyday use in one review, but another found the overall health tracking disappointing.

Product 2: Garmin Forerunner 255
4.3

Health tracking is generally strong, with sleep and overall wellness data lining up well with other devices in several reviews.

heart rate accuracy
Product 1: CMF Watch 3 Pro
3.6

Heart-rate accuracy was mixed: several reviews found it close enough for casual use, while others saw misses, offsets, or poor running performance.

Product 2: Garmin Forerunner 255
4.6

Heart rate accuracy is a major strength, with several reviewers finding results close to or matching chest straps in many workouts.

materials quality
Product 1: CMF Watch 3 Pro
3.1

Material quality is mixed: the watch uses metal in key areas, yet several reviewers still noticed plastic-heavy touches.

Product 2: Garmin Forerunner 255
3.5

Materials are functional rather than premium: reviewers like the low weight but often note the plastic or resin construction feels less luxurious.

menu navigation
Product 1: CMF Watch 3 Pro
4.3

Menu navigation is straightforward, with simple swipe patterns and an easy-to-learn layout.

Product 2: Garmin Forerunner 255
4.3

Menu navigation is easy to learn and dependable, particularly for users who prefer physical controls over touch input.

music controls
Product 1: CMF Watch 3 Pro
4.1

Music controls are present and useful, even though playback stays phone-dependent.

Product 2: Garmin Forerunner 255
4.2

Music controls are useful even on the non-music version, letting users control phone playback from the wrist.

onboard music storage
Product 1: CMF Watch 3 Pro
1.0

There is no onboard music storage, limiting standalone workout use.

Product 2: Garmin Forerunner 255
4.3

Music storage is handy on supported models, with room for about 500 songs and the option to go phone-free.

operating system experience
Product 1: CMF Watch 3 Pro
4.6

The lightweight operating system feels efficient and well suited to the watch’s simple, battery-friendly approach.

Product 2: Garmin Forerunner 255
4.2

The operating system experience is feature-rich and flexible, though some reviewers think Garmin’s software can feel a bit involved.

outdoor visibility
Product 1: CMF Watch 3 Pro
2.0

Outdoor visibility is a weakness, especially on the always-on display and in direct sunlight.

Product 2: Garmin Forerunner 255
4.5

Outdoor visibility is excellent, with multiple reviews highlighting how easy the screen is to read in bright light.

pairing reliability
Product 1: CMF Watch 3 Pro
3.3

Pairing and connection reliability improved versus earlier CMF experiences for some reviewers, but others still hit slow pairing or app disconnects.

Product 2: Garmin Forerunner 255
4.5

Pairing and syncing are reliable for phones, audio gear, and settings changes, helping the watch feel low-friction in daily use.

recovery insights
Product 1: CMF Watch 3 Pro
4.3

Recovery tools go beyond basics with estimated recovery time, training load, and VO2 Max in the stronger fitness-focused reviews.

Product 2: Garmin Forerunner 255
4.5

Recovery insights are useful, with Morning Report, HRV, and recovery-oriented tools helping frame rest and training decisions.

reliability
Product 1: CMF Watch 3 Pro
3.3

Reliability is mixed overall: core functions can work well, but app and feature stability still need polish.

Product 2: Garmin Forerunner 255
4.5

Reliability is a recurring theme, with reviewers describing the watch as a dependable tracker and long-term training companion.

safety features
Product 1: CMF Watch 3 Pro
No score yet
Product 2: Garmin Forerunner 255
4.3

Safety features are a meaningful extra, including personal safety tools, emergency assistance options, and incident detection.

size options
Product 1: CMF Watch 3 Pro
2.5

Only one case size is offered, which restricts fit choice.

Product 2: Garmin Forerunner 255
4.5

Two case sizes make the watch easier to match to different wrist sizes without giving up core features.

sleep tracking accuracy
Product 1: CMF Watch 3 Pro
3.4

Sleep duration often tracked well, but sleep stages and awake-time detection were inconsistent enough that several reviewers questioned its sleep accuracy.

Product 2: Garmin Forerunner 255
4.5

Sleep tracking is generally accurate for sleep timing and performs well enough to support recovery features, though it is not flawless.

smartphone notifications
Product 1: CMF Watch 3 Pro
3.7

Notifications are a core feature, but the experience is uneven: delivery is prompt, yet sync and cleanup behavior can get messy.

Product 2: Garmin Forerunner 255
3.8

Smartphone notifications work well for viewing and dismissing alerts, but replies and controls remain limited.

smartwatch features
Product 1: CMF Watch 3 Pro
4.2

Core smartwatch extras such as voice notes and transcription add useful utility beyond simple notifications.

Product 2: Garmin Forerunner 255
4.0

Smartwatch features are decent for a sports watch, with notifications, payments, music, and widgets, but they are not as deep as full smartwatches.

software smoothness
Product 1: CMF Watch 3 Pro
4.1

Software smoothness is one of the watch’s best traits, with repeated praise for fluid scrolling and responsive performance despite some isolated lag complaints.

Product 2: Garmin Forerunner 255
4.5

Software performance is smooth, with reviewers praising lag-free menus and quick syncing behavior.

step counting accuracy
Product 1: CMF Watch 3 Pro
4.1

Step counting looked close enough in the only direct comparison review, though evidence was limited.

Product 2: Garmin Forerunner 255
No score yet
stress tracking
Product 1: CMF Watch 3 Pro
3.5

Stress tracking is present, but insight quality and consistency were mixed, with one reviewer calling it temperamental.

Product 2: Garmin Forerunner 255
3.7

Stress tracking is available and tied into Garmin’s broader wellness data, though not every reviewer found it equally useful.

style and design
Product 1: CMF Watch 3 Pro
4.6

Style is one of the watch’s clearest wins, with repeated praise for its distinctive, premium-looking design.

Product 2: Garmin Forerunner 255
3.5

The design is practical and sporty rather than luxurious, balancing comfort and function over visual flair.

third-party app support
Product 1: CMF Watch 3 Pro
1.0

Third-party app support is effectively absent, and reviewers repeatedly flagged that limitation.

Product 2: Garmin Forerunner 255
4.2

Third-party support is solid through Connect IQ, with downloadable faces, apps, and related add-ons available.

touchscreen responsiveness
Product 1: CMF Watch 3 Pro
3.2

Touch response is mostly good, though one review noted occasional missed swipes.

Product 2: Garmin Forerunner 255
1.0

Touch interaction is effectively absent because the watch does not use a touchscreen at all.

user interface
Product 1: CMF Watch 3 Pro
4.5

The UI is consistently praised for its clean, minimalist look and easy readability.

Product 2: Garmin Forerunner 255
4.2

The user interface is clear and useful once learned, though the depth of features can make some items harder to find at first.

value for money
Product 1: CMF Watch 3 Pro
4.4

Value for money is excellent, with many reviews arguing the watch delivers unusually strong style and battery life for under $100.

Product 2: Garmin Forerunner 255
4.7

Most reviews see the watch as strong value because it brings high-end training and GPS features into a cheaper tier.

voice assistant quality
Product 1: CMF Watch 3 Pro
2.3

Assistant access works for basics on supported phones, but cross-device limitations and restricted ChatGPT availability weaken the overall experience.

Product 2: Garmin Forerunner 255
No score yet
watch face quality
Product 1: CMF Watch 3 Pro
4.2

Watch faces are a standout, with unusually stylish designs for the price and strong always-on support, even if storage limits and a few bland options were noted.

Product 2: Garmin Forerunner 255
4.5

Watch face support is strong, with stock options, custom faces, and third-party downloads available.

water resistance
Product 1: CMF Watch 3 Pro
2.7

Water resistance is limited in practice: IP68 helps with splashes, but reviewers repeatedly warned against swimming or relying on it for water workouts.

Product 2: Garmin Forerunner 255
4.5

Water resistance is solid for swimming and everyday water exposure, with repeated mentions of 5ATM or 50-meter protection.

wellness insights
Product 1: CMF Watch 3 Pro
2.2

Wellness summaries are fairly shallow: sleep and health data are present, but multiple reviews wanted more written guidance and actionable advice.

Product 2: Garmin Forerunner 255
4.3

Wellness insights are one of the more compelling parts of the watch, especially through Morning Report, Body Battery, and related recovery data.

Wi-Fi connectivity
Product 1: CMF Watch 3 Pro
1.0

Wi-Fi is not supported in the only review that addressed it directly.

Product 2: Garmin Forerunner 255
4.0

Wi-Fi support is available on supported music models and is useful for syncing and downloads.

workout tracking variety
Product 1: CMF Watch 3 Pro
4.8

Workout variety is a major strength, with reviewers repeatedly praising the huge list of sports and niche activity modes.

Product 2: Garmin Forerunner 255
4.7

Workout tracking variety is excellent, spanning running, triathlon, swimming, cycling, and many other profiles.