Average score
Product 1: Amazfit T-Rex 3
3.6
Product 2: Garmin Lily 2 Active
4.1
activity auto-detection
Product 1: Amazfit T-Rex 3
1.5

Auto detection exists, but one reviewer found it unreliable enough to trigger bike rides while driving.

Product 2: Garmin Lily 2 Active
No score yet
app ecosystem
Product 1: Amazfit T-Rex 3
3.8

The Zepp app store is present and improving, with extra watch-face and app options, but it remains smaller than major smartwatch ecosystems.

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
3.2

Strap feedback is mixed: some reviewers found it soft and durable, while others found it stiff and sweaty.

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
4.4

Battery life is one of the clearest strengths, with reviewers repeatedly describing multi-day endurance that beats expectations for the price.

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
3.8

Blood oxygen tracking is included in the sensor suite, though most reviews focused on feature availability more than accuracy validation.

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
4.0

Bluetooth support is built in and enables useful external-sensor pairing for workouts and accessories.

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
4.4

Screen brightness is a strong point, with reviewers highlighting a bright AMOLED panel and 2,000-nit peak output.

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
4.2

Build quality is rugged and premium for the money, with solid materials and good real-world toughness.

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
3.8

Physical buttons are genuinely useful during workouts, even if they do not always integrate cleanly with menus.

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
1.5

Call handling is limited because the watch lacks a speaker and cannot make or take calls.

Product 2: Garmin Lily 2 Active
No score yet
calorie tracking usefulness
Product 1: Amazfit T-Rex 3
4.0

Calorie estimates looked broadly in line with rival devices in side-by-side testing.

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
2.9

Charging works reliably, but the small dongle or proprietary cradle is less convenient than standard watch charging setups.

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
2.4

Charging speed is a weak point, with multiple reviewers calling it slow rather than quick top-up friendly.

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
3.5

Coaching tools are plentiful and sometimes helpful, but reviewers disagreed on how mature or useful they feel in practice.

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
3.3

Comfort is highly wrist-dependent: some reviewers found it surprisingly wearable, while others found it bulky over longer periods.

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
3.0

The Zepp companion app has improved, but multiple reviews still describe it as finicky, cluttered, or crash-prone.

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
1.9

Contactless payments exist on paper, but Curve and regional bank limits make the feature restrictive in practice.

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
4.5

The watch works with both Android and iOS, though some features differ by phone platform.

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
4.2

Customization is a strength, with configurable widgets, data pages, and screen layouts.

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
4.2

The AMOLED display looks crisp and attractive overall, even if some reviewers felt it falls short of the best premium screens.

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
4.5

Durability is a major positive, with reviewers repeatedly calling the watch rugged and resilient outdoors.

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
No score yet
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
3.3

Fit is better on medium or larger wrists, while smaller wrists may find the case awkward.

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
4.0

Core fitness tracking is generally solid for the price, especially for mainstream activities.

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
4.3

GPS accuracy is one of the standout strengths, with strong performance across trails, cities, and outdoor routes.

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
3.9

Health tracking is broadly useful, with stronger confidence in the basics than in every advanced metric.

Product 2: Garmin Lily 2 Active
No score yet
heart rate accuracy
Product 1: Amazfit T-Rex 3
3.3

Heart-rate accuracy is mixed: fine in some conditions, but less trustworthy during harder or more variable efforts.

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.

materials quality
Product 1: Amazfit T-Rex 3
4.0

Materials strike a good value balance, combining stainless steel, polymer, and Gorilla Glass for a sturdy feel.

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
2.6

Menus can be intuitive at times, but several reviewers still found them confusing or easy to get lost in.

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
4.0

Basic music controls are present and useful for phone-based playback.

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
3.3

Onboard MP3 storage is available, but the lack of streaming support limits convenience.

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
4.0

The on-watch software feels feature-rich and often pleasant to use, though still less mature than top competitors.

Product 2: Garmin Lily 2 Active
No score yet
outdoor visibility
Product 1: Amazfit T-Rex 3
4.2

Outdoor visibility is strong, with good brightness and readability in bright conditions.

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
3.3

Pairing support is broad, but reliability can be inconsistent with some sensors or workflows.

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
2.6

Recovery and readiness features are present, but their usefulness and consistency vary a lot by reviewer.

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
2.6

Everyday reliability is decent but clearly imperfect, with recurring mentions of quirks, half-finished behavior, or app instability.

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
3.1

Safety-oriented tools like storm alerts are useful, but one dive-related bug raised a serious caution.

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
2.0

Size choice is limited because the watch is effectively offered in one large format.

Product 2: Garmin Lily 2 Active
No score yet
sleep tracking accuracy
Product 1: Amazfit T-Rex 3
4.0

Basic sleep timing and core sleep tracking perform well once the feature is working properly, but advanced scoring is less trusted.

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
3.7

Notification support is present on both platforms, but wake or gesture behavior can get in the way of smooth message checking.

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
3.9

Smartwatch features are plentiful for the price, covering notifications, weather, music, and more, even if some premium functions are missing.

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
4.2

General navigation is often smooth and responsive, though some screens or map situations still slow down.

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
4.0

Step counts generally land in the same ballpark as established competitors.

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
3.8

Stress tracking is included as part of the health suite, though reviewers focused more on availability 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
3.6

The rugged hexagonal styling stands out, though some reviewers found the watch bulky or overbuilt.

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
4.0

Third-party support is respectable, with apps and services spanning fitness syncing, app-store add-ons, and media controls.

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
4.2

The touchscreen is generally responsive and usable, including during workouts, though not flawless in every scenario.

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
3.6

The UI is feature-rich and sometimes one of the watch’s strengths, but it can also feel overwhelming to less tech-savvy users.

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
4.6

Value for money is one of the biggest selling points, with reviewers repeatedly saying the feature set is exceptional for the price.

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
3.1

Voice assistance is promising but inconsistent, with decent transcription and commands offset by uneven understanding.

Product 2: Garmin Lily 2 Active
No score yet
watch face quality
Product 1: Amazfit T-Rex 3
4.5

Watch faces are a clear positive, with reviewers calling them attractive and well executed.

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
4.4

Water protection is strong, with 10 ATM / 100 m credentials and repeated positive swim or dive mentions.

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
3.9

Wellness and readiness insights add useful context, though they are not always as dependable as the best competing systems.

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
4.0

Wi-Fi is built in and mainly matters for tasks like downloading maps directly to the watch.

Product 2: Garmin Lily 2 Active
No score yet
workout tracking variety
Product 1: Amazfit T-Rex 3
4.5

Workout variety is a major strength, with about 177 modes spanning mainstream and niche activities.

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.