Average score
Product 1: Amazfit T-Rex 3 Pro
3.7
Product 2: Garmin Lily 2 Active
4.1
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 Lily 2 Active
No score yet
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 Lily 2 Active
4.2

One review describes Garmin’s wellness ecosystem as comprehensive, especially for turning health data into useful summaries.

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 Lily 2 Active
4.8

The silicone band is described positively for comfort and feel.

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 Lily 2 Active
4.4

Battery life is widely praised, with most reviews citing around nine days and some testers stretching well beyond a week.

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 Lily 2 Active
4.4

Pulse Ox is present and generally viewed positively, with one reviewer calling the SpO2 readings spot-on.

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 Lily 2 Active
4.2

Bluetooth support is consistently mentioned for sensor links, heart-rate broadcasting, and phone connectivity.

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 Lily 2 Active
2.8

One reviewer said the screen can be hard to read in very bright conditions, even at maximum brightness.

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 Lily 2 Active
4.2

The move from a plastic case to a metal case is presented as a quality upgrade.

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 Lily 2 Active
4.8

The new physical buttons are one of the most praised upgrades, especially for workouts and easier navigation.

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 Lily 2 Active
No score yet
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 Lily 2 Active
3.0

Calorie data is available, but one review said calories burned ran slightly off compared with another watch.

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 Lily 2 Active
4.6

Charging is improved by the standard Garmin cable or simple magnetic setup, and reviewers call the new approach more convenient.

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 Lily 2 Active
4.5

Charging speed is good, with reviewers reporting roughly a full charge in about an hour.

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 Lily 2 Active
4.7

Garmin Coach and structured workouts are widely praised for offering guided plans and flexible goal-based training.

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 Lily 2 Active
4.9

Comfort is a standout strength, with reviewers repeatedly saying the watch is light, easy to sleep in, and easy to forget on the wrist.

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 Lily 2 Active
3.5

Garmin Connect gets mixed marks: reviewers praised setup and data usefulness, but one found the app less clear than it could be.

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 Lily 2 Active
4.2

Garmin Pay is repeatedly noted as convenient and easy for on-the-go payments.

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 Lily 2 Active
4.5

One review explicitly says the watch works with both iOS and Android phones.

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 Lily 2 Active
4.2

Reviews note good customization for watch faces, widgets, data pages, training plans, and notifications, even if flexibility is not unlimited everywhere.

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 Lily 2 Active
4.3

The hidden monochrome display earns praise for clarity and contrast, though it remains intentionally simple rather than rich or colorful.

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 Lily 2 Active
3.5

Durability impressions are mixed, with Gorilla Glass noted positively but aluminum scratch resistance called out as a weakness.

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

Reviewers explicitly noted that ECG is missing.

Product 2: Garmin Lily 2 Active
1.0

Reviews explicitly note that the Lily 2 Active does not include ECG 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 Lily 2 Active
4.8

The compact size and lightweight build earn strong praise for smaller wrists and all-day wear.

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 Lily 2 Active
4.7

General fitness tracking is reviewed very positively, with performance described as accurate and comparable to pricier Garmin models.

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 Lily 2 Active
4.7

GPS is a standout strength, with multiple reviews calling it accurate, fast to connect, and very close to higher-end Garmin devices.

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 Lily 2 Active
No score yet
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 Lily 2 Active
4.4

Multiple reviews say heart-rate tracking was very solid or spot-on, with only minor lag during quick changes in effort.

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

Reviews explicitly said there is no LTE or cellular option.

Product 2: Garmin Lily 2 Active
No score yet
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 Lily 2 Active
3.6

Materials get mixed feedback: Gorilla Glass and aluminum are appreciated, but one reviewer still viewed the aluminum as easier to scratch than pricier materials.

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 Lily 2 Active
4.2

Menus and widget navigation are generally viewed as straightforward, with swipes and buttons making the watch easier to move around.

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 Lily 2 Active
4.0

Phone-based music controls work well for basic playback tasks like volume and track skipping.

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 Lily 2 Active
1.0

Multiple reviews explicitly say there is no onboard music storage, so you still need your phone for music.

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 Lily 2 Active
No score yet
outdoor visibility
Product 1: Amazfit T-Rex 3 Pro
5.0

Outdoor readability was consistently praised thanks to the bright display.

Product 2: Garmin Lily 2 Active
4.8

One review specifically said the screen stayed readable outdoors, even in direct sunlight.

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 Lily 2 Active
4.4

Pairing is described as easy and dependable for phones and supported external sensors.

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 Lily 2 Active
4.3

HRV, Body Battery, Training Readiness, and related guidance give useful signals about recovery and when to push or rest.

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 Lily 2 Active
4.8

One reviewer explicitly described the watch as very reliable during GPS 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 Lily 2 Active
4.6

Incident detection, fall alerts, and emergency contact sharing are repeatedly mentioned as reassuring safety features.

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 Lily 2 Active
No score yet
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 Lily 2 Active
4.5

Reviewers consistently said the watch nailed sleep and wake timing and caught wake-ups well, though one review still wanted deeper sleep-stage detail.

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 Lily 2 Active
4.4

The watch reliably mirrors smartphone notifications, with support for calls, texts, and app alerts.

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 Lily 2 Active
4.2

Core smartwatch basics are here, including notifications, music control, and Garmin Pay, but the feature set stays focused rather than expansive.

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 Lily 2 Active
4.5

One review says day-to-day swiping and opening apps feels smooth.

step counting accuracy
Product 1: Amazfit T-Rex 3 Pro
No score yet
Product 2: Garmin Lily 2 Active
4.2

One reviewer found step counts close in casual testing, though arm-free walking can still miss steps.

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 Lily 2 Active
4.2

Stress tracking is included across reviews and is described as useful for understanding energy and daily load.

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 Lily 2 Active
4.8

Style is one of the biggest selling points, with reviewers consistently praising the fashionable, minimalist look.

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 Lily 2 Active
4.2

Reviews confirm syncing and compatibility with third-party services such as Strava, TrainingPeaks, and similar fitness platforms.

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 Lily 2 Active
2.2

Touch input is the clearest weakness in the reviews, with repeated complaints about touches not registering cleanly.

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 Lily 2 Active
4.2

One reviewer describes the interface as very simple to swipe through and interact with.

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 Lily 2 Active
3.7

Value is mixed but mostly positive: several reviews say the added GPS and upgrades justify the price, while others think rivals offer more for similar money.

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 Lily 2 Active
No score yet
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 Lily 2 Active
3.3

Watch face options get mixed feedback: the designs suit the look of the watch, but several reviewers wanted more variety or more color.

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 Lily 2 Active
4.5

One review states the watch is water resistant to 5 ATM.

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 Lily 2 Active
4.5

Body Battery, sleep scores, hormone guidance, and other wellness summaries are a major strength and frequently described as useful.

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 Lily 2 Active
No score yet
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 Lily 2 Active
4.6

Reviews repeatedly highlight the wide range of sport profiles and workout modes, with the Active adding many more than earlier Lily models.