Average score
Product 1: Amazfit T-Rex 3 Pro
3.7
Product 2: Garmin Forerunner 965
4.0
activity auto-detection
Product 1: Amazfit T-Rex 3 Pro
4.5

Auto-detection was praised for reliably picking up common activities, with one review calling it a strength and another noting support for common auto-tracked workouts.

Product 2: Garmin Forerunner 965
2.0

Auto-detection is explicitly criticized in testing, with reviewers saying workouts usually need to be started manually to access the watch’s richer tracking features.

app ecosystem
Product 1: Amazfit T-Rex 3 Pro
2.8

Zepp OS offers a workable app ecosystem and free or paid extras, but reviewers repeatedly said the store is thinner than Apple or Google and lacks many marquee apps.

Product 2: Garmin Forerunner 965
4.0

The app ecosystem is solid rather than class-leading: reviewers cite Connect IQ support and a healthy app catalog, but not the broader polish or reach of Apple or Wear OS ecosystems.

band quality
Product 1: Amazfit T-Rex 3 Pro
3.5

The strap is functional and stretchy, but one reviewer found it sticky after workouts.

Product 2: Garmin Forerunner 965
4.4

Band quality is generally good, with flexible silicone straps and solid sweat performance, though silicone can stay damp and irritate skin if not dried after workouts.

battery life
Product 1: Amazfit T-Rex 3 Pro
4.4

Battery life is a major strength, with reviewers reporting anything from about a week of heavier use to roughly 18 days per charge, even if real results can trail headline claims.

Product 2: Garmin Forerunner 965
4.4

Battery life is a major strength. Reviewers report multi-day to multi-week endurance depending on usage, with always-on display and GPS workouts reducing runtime but still leaving it ahead of many rivals.

blood oxygen tracking
Product 1: Amazfit T-Rex 3 Pro
4.0

SpO2 support is present, and one comparison review reported the same 96 percent reading as a higher-end reference watch.

Product 2: Garmin Forerunner 965
4.1

The watch supports blood oxygen tracking and related wellness sensors, but reviewers discuss it more as part of the feature set than as a standout accuracy differentiator.

Bluetooth connectivity
Product 1: Amazfit T-Rex 3 Pro
4.5

Bluetooth support is broad enough for phone use and external sensors, and the connection side was generally described as reliable.

Product 2: Garmin Forerunner 965
4.4

Bluetooth connectivity is dependable for phone pairing and headphone playback, with no major complaints in the selected reviews.

brightness
Product 1: Amazfit T-Rex 3 Pro
5.0

The 3,000-nit display was repeatedly described as very bright and easy to read outdoors.

Product 2: Garmin Forerunner 965
4.7

Brightness is repeatedly praised. Reviewers call the AMOLED screen bright, vivid, and easy to read in varied lighting.

build quality
Product 1: Amazfit T-Rex 3 Pro
4.5

Reviewers liked the rugged, premium feel, though not everyone thought the finish matched pricier rivals.

Product 2: Garmin Forerunner 965
4.5

Build quality feels premium overall, helped by the metal or titanium bezel and polished finish, even if outright ruggedness is not the headline strength.

button controls
Product 1: Amazfit T-Rex 3 Pro
3.8

Physical buttons are generally useful and glove-friendly, but some reviewers noted stickiness or workflow friction.

Product 2: Garmin Forerunner 965
4.7

Button controls are a clear positive. Multiple reviews praise the tactile hardware buttons and say they remain easy to use during workouts and with gloves.

call handling
Product 1: Amazfit T-Rex 3 Pro
3.9

Calls are supported and some reviewers liked the speaker quality, but others said microphone and speaker quality is only okay.

Product 2: Garmin Forerunner 965
2.7

Call handling is inconsistent across reviews. One source says calls can be answered via a paired phone, while others explicitly note missing call functionality compared with Garmin’s more smartwatch-focused models.

calorie tracking usefulness
Product 1: Amazfit T-Rex 3 Pro
4.5

One reviewer found the Zepp app genuinely useful for logging meals and comparing intake with calorie expenditure.

Product 2: Garmin Forerunner 965
3.1

Calorie tracking is only modestly useful. Calories are visible in daily metrics, but one review says users wanting stronger calorie and intake support should look elsewhere.

charging convenience
Product 1: Amazfit T-Rex 3 Pro
4.3

Magnetic pogo-pin charging with USB-C was usually described as easy and secure.

Product 2: Garmin Forerunner 965
2.5

Charging convenience is a weak point because Garmin still uses a proprietary connector, and reviewers call the port connection delicate while also noting the lack of wireless charging.

charging speed
Product 1: Amazfit T-Rex 3 Pro
2.9

Charging is acceptable but not fast, with multiple reviews calling full top-ups slow or roughly 1 to 2 hours.

Product 2: Garmin Forerunner 965
4.7

Charging speed is good, with reviewers citing roughly an hour to reach high percentages and quick top-ups that provide meaningful battery in minutes.

coaching features
Product 1: Amazfit T-Rex 3 Pro
2.9

Coaching and training plans exist, but several reviews felt Zepp Coach and related training tools still need refinement.

Product 2: Garmin Forerunner 965
4.5

Coaching features are strong, with suggested workouts, race prediction, and readiness-style guidance giving the watch a helpful training-assistant feel.

comfort
Product 1: Amazfit T-Rex 3 Pro
3.7

Comfort is mixed; some found it comfortable and stable, while others felt the large case was noticeable or too big for smaller wrists.

Product 2: Garmin Forerunner 965
4.5

Comfort is a strength for most users thanks to the light, slim build and wearable design, though the large case can still be noticeable for some sleepers or smaller wrists.

companion app quality
Product 1: Amazfit T-Rex 3 Pro
3.7

The Zepp app is insightful and intuitive for some reviewers, but others called it clunky or not very polished.

Product 2: Garmin Forerunner 965
3.9

Companion app quality is mixed. Garmin Connect is praised for depth and data access, but several reviewers also call it confusing or poorly organized in places.

contactless payments
Product 1: Amazfit T-Rex 3 Pro
1.5

NFC payments are limited by region and processor support, with repeated complaints about Zepp Pay or Curve restrictions.

Product 2: Garmin Forerunner 965
3.7

Contactless payments are available through Garmin Pay, but real-world usefulness depends heavily on bank support, which several reviewers say is still uneven.

cross-platform compatibility
Product 1: Amazfit T-Rex 3 Pro
5.0

Android and iOS support is a clear plus and was consistently noted.

Product 2: Garmin Forerunner 965
4.5

Cross-platform compatibility is strong, with consistent support for both Android and iPhone across reviews.

customization options
Product 1: Amazfit T-Rex 3 Pro
4.0

Customization is a plus, with support for reordering widgets and adjusting workout data screens.

Product 2: Garmin Forerunner 965
4.7

Customization options are extensive, including watch faces, widgets, data pages, and other configurable on-watch and in-app elements.

display quality
Product 1: Amazfit T-Rex 3 Pro
4.5

The AMOLED display drew praise for clarity and readability, with sapphire protection adding to the premium feel.

Product 2: Garmin Forerunner 965
4.8

Display quality is one of the headline wins. The AMOLED panel is widely described as sharp, vibrant, and transformative compared with older MIP models.

durability
Product 1: Amazfit T-Rex 3 Pro
4.7

Ruggedness is a major selling point, with titanium or sapphire hardware and outdoor toughness repeatedly praised.

Product 2: Garmin Forerunner 965
3.5

Durability is mixed. Some reviewers appreciate the materials and scratch resistance expectations, but several also report real scratches and visible wear sooner than expected.

ECG functionality
Product 1: Amazfit T-Rex 3 Pro
1.0

Reviewers explicitly noted that ECG is missing.

Product 2: Garmin Forerunner 965
1.5

ECG functionality is absent. Multiple reviews explicitly state that the Forerunner 965 does not include ECG hardware or support.

fit
Product 1: Amazfit T-Rex 3 Pro
4.5

Despite the chunky case, one reviewer said the watch stayed secure and did not slide around during use.

Product 2: Garmin Forerunner 965
3.5

Fit is acceptable for many wrists but not ideal for everyone. Several reviews warn that the 47mm case can feel large on smaller wrists.

fitness tracking accuracy
Product 1: Amazfit T-Rex 3 Pro
4.5

General activity and workout tracking were usually described as strong, especially for common sports usage.

Product 2: Garmin Forerunner 965
4.9

Fitness tracking accuracy is a standout strength, with reviewers praising the consistency of workout metrics and the overall trustworthiness of exercise data.

GPS accuracy
Product 1: Amazfit T-Rex 3 Pro
4.4

Core GPS accuracy is one of the watch’s strengths, with many reviews calling tracks accurate or very solid even when route creation and rerouting remain weaker.

Product 2: Garmin Forerunner 965
4.9

GPS accuracy is one of the watch’s clearest strengths, repeatedly described as spot-on, industry-leading, or nearly dead accurate in testing.

health tracking accuracy
Product 1: Amazfit T-Rex 3 Pro
4.0

Broad health metrics were described as generally solid, though not every wellness score felt equally useful.

Product 2: Garmin Forerunner 965
4.1

Health tracking accuracy is good overall but not flawless. Reviewers praise the depth and usefulness of health data, while some flag sleep-related inconsistency that affects broader health confidence.

heart rate accuracy
Product 1: Amazfit T-Rex 3 Pro
4.3

Heart-rate results were often good to excellent in running and general use, but some reviews still saw weaker performance than top rivals in tougher conditions.

Product 2: Garmin Forerunner 965
4.6

Heart rate accuracy is strong for a wrist-based sensor, with several reviewers calling it excellent or near chest-strap performance, though interval lag can still appear.

LTE connectivity
Product 1: Amazfit T-Rex 3 Pro
1.0

Reviews explicitly said there is no LTE or cellular option.

Product 2: Garmin Forerunner 965
1.5

LTE connectivity is absent. Reviews explicitly note that the watch lacks LTE or mobile internet support.

materials quality
Product 1: Amazfit T-Rex 3 Pro
4.5

Titanium and sapphire upgrades were repeatedly highlighted as premium, durable material improvements.

Product 2: Garmin Forerunner 965
4.4

Materials quality is solid, with repeated mentions of titanium, Gorilla Glass, and generally premium-feeling hardware choices.

menu navigation
Product 1: Amazfit T-Rex 3 Pro
2.2

Menu navigation often takes extra steps, and several reviews found settings placement or flow less efficient than rivals.

Product 2: Garmin Forerunner 965
4.3

Menu navigation is generally good once learned, with reviewers highlighting customizable widgets and easy menu flow, though Garmin’s depth can still feel dense at first.

music controls
Product 1: Amazfit T-Rex 3 Pro
4.0

Phone music control is supported and useful, but it is basic rather than platform-rich.

Product 2: Garmin Forerunner 965
4.2

Music controls are well covered for a sports watch, with reviewers noting onboard player controls and convenient workout use.

onboard music storage
Product 1: Amazfit T-Rex 3 Pro
4.0

Local music storage is available for MP3 playback, with multiple reviews noting internal space for audio.

Product 2: Garmin Forerunner 965
4.5

Onboard music storage is a strength thanks to offline music support and ample storage for playlists, maps, and media.

operating system experience
Product 1: Amazfit T-Rex 3 Pro
3.6

Zepp OS is easy enough to use and fast in places, but several reviews still described the software as less polished than leading platforms.

Product 2: Garmin Forerunner 965
3.9

The operating system experience is capable but not always elegant. Reviewers appreciate the depth and button-first control options, yet some still describe Garmin’s interface conventions as archaic or complex.

outdoor visibility
Product 1: Amazfit T-Rex 3 Pro
5.0

Outdoor readability was consistently praised thanks to the bright display.

Product 2: Garmin Forerunner 965
4.6

Outdoor visibility is a clear positive. Reviewers say the AMOLED screen remains readable outdoors and in direct sun, even if some still prefer MIP’s look.

pairing reliability
Product 1: Amazfit T-Rex 3 Pro
3.5

Pairing is mixed; phone-side reliability seems good, but some sensor connections were inconsistent.

Product 2: Garmin Forerunner 965
4.5

Pairing reliability is strong, with quick phone pairing and dependable syncing or headphone use in the selected reviews.

recovery insights
Product 1: Amazfit T-Rex 3 Pro
2.5

Recovery and readiness features exist but often feel shallow, hard to drill into, or unfinished.

Product 2: Garmin Forerunner 965
4.8

Recovery insights are a major strength, especially through Training Readiness, recovery time, and related load metrics that help guide training decisions.

reliability
Product 1: Amazfit T-Rex 3 Pro
1.8

The watch can do a lot, but multiple reviews described unfinished software and quirky behavior.

Product 2: Garmin Forerunner 965
4.6

Reliability is broadly strong. Reviewers describe stable tracking, dependable uploads, and few serious failures in day-to-day use.

safety features
Product 1: Amazfit T-Rex 3 Pro
1.2

Safety support is limited overall, with reviewers noting missing emergency protections or risky navigation and dive-screen behavior.

Product 2: Garmin Forerunner 965
4.4

Safety features are meaningful, with reviewers highlighting LiveTrack and fall detection as useful extras for training and outdoor use.

size options
Product 1: Amazfit T-Rex 3 Pro
4.5

The new 44mm and 48mm sizes were welcomed as a practical improvement.

Product 2: Garmin Forerunner 965
2.8

Size options are limited because the Forerunner 965 is effectively a one-size model, which can be restrictive for smaller-wrist users.

sleep tracking accuracy
Product 1: Amazfit T-Rex 3 Pro
3.8

Sleep duration and timing were often decent to good, but confidence in scoring and interpretation was mixed.

Product 2: Garmin Forerunner 965
3.7

Sleep tracking accuracy is one of the most mixed areas. Some reviewers call it excellent or improved versus older Garmins, while others say the results can feel off or inconsistent.

smartphone notifications
Product 1: Amazfit T-Rex 3 Pro
3.4

Notifications generally arrive reliably, but handling is basic and can be annoying or noisy.

Product 2: Garmin Forerunner 965
3.7

Smartphone notifications work well enough for viewing alerts, but several reviews point out limitations around interaction and reply behavior, especially on iPhone.

smartwatch features
Product 1: Amazfit T-Rex 3 Pro
4.2

The feature list is large, including calls, flashlight, maps, and voice tools, but polish varies.

Product 2: Garmin Forerunner 965
4.2

Smartwatch features are good for a training watch, including notifications, music, and payments, but they still trail more full-fledged smartwatches in polish and breadth.

software smoothness
Product 1: Amazfit T-Rex 3 Pro
2.8

Smoothness is uneven; some reviewers saw lag and sluggish responses, while others found general use acceptably snappy.

Product 2: Garmin Forerunner 965
4.7

Software smoothness is a strong point, with reviewers describing the interface as fluid and largely free of lag or stutter.

step counting accuracy
Product 1: Amazfit T-Rex 3 Pro
No score yet
Product 2: Garmin Forerunner 965
4.5

Step counting accuracy is strong in the selected evidence, including one low-error test result and praise for the visible real-time counter.

stress tracking
Product 1: Amazfit T-Rex 3 Pro
3.5

Stress tracking is available as part of the health suite, but reviews focused more on presence than deep validation.

Product 2: Garmin Forerunner 965
4.3

Stress tracking is well integrated into Garmin’s broader readiness and wellness stack, with reviewers frequently citing it as one of the useful day-to-day metrics.

style and design
Product 1: Amazfit T-Rex 3 Pro
3.3

The rugged look appeals to outdoor-focused buyers, but some reviewers found it bulky or not universally attractive.

Product 2: Garmin Forerunner 965
4.6

Style and design are widely praised, with the AMOLED display, slimmer body, and premium bezel helping the 965 look more modern and upscale than earlier Forerunners.

third-party app support
Product 1: Amazfit T-Rex 3 Pro
2.0

This is a weak area, with repeated notes about missing major apps and no streaming services like Spotify.

Product 2: Garmin Forerunner 965
4.4

Third-party app support is good, with Connect IQ apps plus integrations like Strava and TrainingPeaks adding flexibility for training and data workflows.

touchscreen responsiveness
Product 1: Amazfit T-Rex 3 Pro
4.3

The touchscreen was usually described as good, though performance can still vary depending on context.

Product 2: Garmin Forerunner 965
4.4

Touchscreen responsiveness is generally praised, with reviewers saying touch makes navigation easy and smooth when they choose to use it.

user interface
Product 1: Amazfit T-Rex 3 Pro
3.0

The UI is usable once learned, but opinions split between intuitive basics and frustration with changed flows or too many steps.

Product 2: Garmin Forerunner 965
4.6

The user interface is improved and easier on the eyes than earlier Forerunners, with smoother visuals and a more modern presentation.

value for money
Product 1: Amazfit T-Rex 3 Pro
4.7

Value is one of the strongest positives, with several reviews saying it brings premium outdoor features well below Garmin or Apple pricing.

Product 2: Garmin Forerunner 965
3.8

Value for money is mixed. Several reviewers think the feature set can justify the price, but others say many buyers would be better served by cheaper Garmin alternatives.

voice assistant quality
Product 1: Amazfit T-Rex 3 Pro
3.4

Zepp Flow can be genuinely useful for commands and simple questions, but reliability and understanding are inconsistent.

Product 2: Garmin Forerunner 965
1.5

Voice assistant functionality is absent. Reviews explicitly note there is no voice assistant, microphone-based response system, or similar wrist voice feature.

watch face quality
Product 1: Amazfit T-Rex 3 Pro
4.0

One reviewer highlighted a large selection of watch faces, many of them free.

Product 2: Garmin Forerunner 965
4.1

Watch face quality is good overall, especially visually on the AMOLED display, but some reviewers also note fewer face options than previous Garmin experiences.

water resistance
Product 1: Amazfit T-Rex 3 Pro
4.5

Water resistance is a clear strength, with 10 ATM protection and support for snorkeling or scuba-oriented use.

Product 2: Garmin Forerunner 965
4.7

Water resistance is strong, with repeated confirmation of 5ATM or 50-meter suitability for swimming and everyday water exposure.

wellness insights
Product 1: Amazfit T-Rex 3 Pro
3.5

BioCharge, HRV, and wellness feedback can feel helpful and aligned with how users feel, but some reviewers found readiness-style outputs simplistic or unreliable.

Product 2: Garmin Forerunner 965
4.6

Wellness insights are a major selling point, with Body Battery, sleep scores, readiness-style guidance, and rest cues making daily health data more actionable.

Wi-Fi connectivity
Product 1: Amazfit T-Rex 3 Pro
4.0

Wi-Fi support is present for downloads and connectivity features, including map transfers, though setup can feel cumbersome.

Product 2: Garmin Forerunner 965
4.0

Wi-Fi connectivity is useful for tasks like map or music downloads, though it is not framed as especially fast or notable compared with other core features.

workout tracking variety
Product 1: Amazfit T-Rex 3 Pro
4.8

Sport coverage is huge, with roughly 170 to 187 plus modes commonly praised.

Product 2: Garmin Forerunner 965
4.7

Workout tracking variety is excellent, with broad multisport coverage, triathlon support, and many workout modes ranging from yoga to golf and hiking.