Amazfit Active 2: Best Health Features to Know in 2026

Amazfit Active 2 Features: Everything You Need to Know Before You Buy

The sub-$100 smartwatch market has never been more competitive, but the Amazfit Active 2 has carved out a clear position: more health sensors than anything else at this price, wrapped in a design that doesn't look cheap. Tom's Guide called it their favorite smartwatch under $100 — and after a hands-on look at everything it offers, it's easy to see why. This guide breaks down every major feature, who it's built for, and where it falls short compared to pricier alternatives like the Apple Watch Series 11 or the Garmin Venu 3.

Market Context: Why the Active 2 Matters in 2025

Most sub-$100 smartwatches make you choose between style and substance. Budget fitness bands like the Fitbit Charge 6 offer solid tracking but a narrow, band-style form factor. Entry-level smartwatches often look the part but skimp on sensors. The Amazfit Active 2 breaks that pattern by fitting a 1.32-inch AMOLED display, GPS, blood oxygen monitoring, heart rate tracking, and Zepp OS onto a round watch face — available in both round and square variants — at a price most health-conscious buyers won't need to justify to themselves.

Amazfit has also continued updating the watch post-launch, with August 2025 software updates rolling out new features via OTA, which means the device you buy today keeps improving over time. That's a meaningful differentiator in a segment where firmware support often stops at launch.

Display and Design

The Active 2 (Round) features a 1.32-inch AMOLED display — bright, sharp, and readable outdoors. The round case is designed for fashion-conscious users who don't want to wear something that screams "fitness tracker." It's available with leather and silicone strap options, including a Black Leather Premium variant that positions it closer to everyday fashion accessory than sports gadget.

The square variant follows the same philosophy with a different aesthetic. Both share the same core internals, so your choice between them is purely about wrist style.

Build and Wearability

The user manual recommends wearing the strap not too tight and not too loose — leave enough room for your skin to breathe while maintaining sensor contact. During workouts, Amazfit recommends tightening the strap to ensure the heart rate and blood oxygen sensors stay flush against your wrist. This is standard guidance across most health-focused wearables, but it's worth noting for new users who wonder why their readings seem inconsistent.

Core Health Tracking Features

Heart Rate Monitoring

The Active 2 tracks heart rate continuously throughout the day and during workouts. The optical sensor sits on the underside of the watch and updates at regular intervals in normal use, increasing its sampling rate automatically when it detects exercise. This is the same approach used by Samsung Galaxy Watch 8, though Samsung's implementation benefits from more mature algorithms developed over a longer hardware generation cycle.

Blood Oxygen (SpO2)

Blood oxygen measurement is available on-demand and during sleep tracking. For accurate results, the manual is specific: avoid wearing the watch on the wrist joint, keep your arm flat, maintain a snug fit against your skin, and hold still. External factors — arm hair, tattoos, arm sway — can reduce accuracy or cause the measurement to fail. This is not a limitation unique to Amazfit; every optical SpO2 sensor on the market, including those on the Oura Ring 4, carries the same caveats.

Sleep Tracking

Sleep tracking on the Active 2 runs automatically when the watch detects you're asleep. It logs total sleep time, sleep stages (light, deep, REM), and blood oxygen trends overnight. The Zepp app surfaces this data in a readable format the following morning. For users who want deeper sleep analysis without a subscription, this is a strong value proposition — the Whoop 5 covers similar ground but requires a monthly membership fee on top of the hardware cost.

Workout Tracking and GPS

The Active 2 supports over 120 sport modes and includes built-in GPS — a feature that disappears entirely on many watches at this price point. Built-in GPS means you can leave your phone at home during runs and still get accurate distance, pace, and route data. The Tom's Guide review highlighted this as one of the seven key things to know before buying, specifically because GPS without the phone is rare under $100.

Smart Features

Control Center and Gesture Navigation

Swiping down from the watch face opens the Control Center, where you can quickly toggle Battery Saver Mode, Do Not Disturb, Theater Mode, Sleep Mode, Bluetooth, Brightness, Flashlight, Screen Lock, and more. The interface supports tap, press-and-hold, and swipe gestures. Swiping left-to-right on most sub-pages takes you back to the previous screen — a gesture-based navigation system that keeps the watch free of physical buttons beyond the main power/back button.

Find My Phone and Find My Watch

The Active 2 includes bidirectional device-finding. From the watch, tap "Find My Phone" in the app list and your phone vibrates — tap the bell icon to make it ring. From the Zepp app on your phone, you can ping the watch. Both features require an active Bluetooth connection.

NFC Payments

The NFC variant of the Active 2 (Round) supports contactless payments. This feature depends on regional availability and bank support — not every issuer works with Amazfit's NFC implementation, so verify your bank is compatible before this becomes a purchase decision driver.

Notifications and Phone Integration

The watch requires Android 7.0 or iOS 14.0 or later. Pairing is handled through the Zepp app — scan the QR code shown on the watch at first boot, log into the app, and the connection is established. Switching to a new phone requires unpairing from the old device, restoring the watch to factory settings, and re-pairing. iOS users have an additional step: remove the Bluetooth pairing from iPhone Settings before re-pairing.

Zepp OS and Software Updates

The Active 2 runs Zepp OS — Amazfit's proprietary operating system. It's not Android Wear or watchOS, which means app availability is limited compared to what you'd find on a Google Pixel Watch 4. However, Amazfit has invested in health-first apps that cover the most common use cases: workouts, sleep, stress, heart rate, SpO2, and navigation via maps display.

Zepp OS updates are delivered over-the-air through the app. The August 2025 software update for the Active 2 Square added new features post-launch, demonstrating that Amazfit is maintaining active development on this device. To update: keep the watch connected to your phone, open the Zepp app, navigate to Device > Amazfit Active 2 > General > System Update, and tap Update Immediately when a new version appears.

How It Compares to the Competition

The Active 2's position is clear: it delivers GPS, AMOLED, health sensors, and a round case design at roughly half the cost of the Garmin Venu 3 and a quarter of the cost of the Apple Watch Series 11. The trade-off is a smaller app ecosystem and a UI that Tom's Guide described as "clunky" in places.

Common Mistakes to Avoid

Wearing It Wrong for Health Measurements

The most frequent reason for inaccurate SpO2 and heart rate readings is improper wear position. Wearing the watch too far down toward the wrist joint — rather than a few centimeters above it — disrupts the optical sensor's contact with the skin. Users often assume sensor errors mean the hardware is defective, when positioning is actually the issue. Move the watch higher up the forearm, tighten the strap two notches for measurements, and hold still for the full reading duration.

Skipping the Zepp App Setup

The Active 2 stores workout data locally but syncs to the Zepp app for trend analysis, sleep breakdowns, and health score calculations. Users who don't install and regularly open the app miss out on the full value of the hardware. Make opening the app part of your morning routine — it takes 30 seconds to sync and gives you a complete overnight and daily summary.

Ignoring OTA Updates

Amazfit has demonstrated active post-launch support through software updates. Users who skip system updates miss performance improvements and occasionally new features. Enable update notifications in the Zepp app settings and accept updates when prompted — the Active 2 updates in the background while charging, so there's no meaningful disruption.

Expecting Third-Party App Support

The Active 2 runs Zepp OS, not Wear OS or watchOS. If your workflow depends on third-party apps — Spotify offline sync, Strava live segments, Google Maps turn-by-turn — this is not the right watch. The native feature set is comprehensive, but the third-party ecosystem is thin compared to Google Pixel Watch 4 or Apple Watch Series 11. Know what you're buying before you buy it.

Buying for NFC Without Checking Bank Compatibility

Several buyers have purchased the NFC variant specifically for payments and discovered their bank isn't supported. Before paying the small premium for the NFC model, verify your card issuer supports Amazfit Pay in your region. If contactless payments are a priority and bank support is uncertain, a Fitbit Charge 6 with Google Wallet integration may be a safer choice.

Who Should Buy the Amazfit Active 2

The Active 2 is the right watch for someone who wants comprehensive health tracking — heart rate, SpO2, sleep stages, built-in GPS, stress monitoring — in a stylish round case, without spending more than $100. It's particularly strong for casual runners and gym users who want workout tracking with real GPS data but can't justify the price of a Garmin Venu 3.

It's not the right watch for someone deeply embedded in the Apple or Google ecosystem who relies on third-party watch apps, or for a serious endurance athlete who needs advanced training metrics like VO2 max trend analysis or lactate threshold estimates. For those users, the price gap to a more capable device is worth closing.

For a complete breakdown of how the Amazfit Active 2 performs in real-world testing, see our full Amazfit Active 2 review.

Final Verdict on Features

At its price point, the Amazfit Active 2 offers a feature set that punches well above its weight. Built-in GPS, AMOLED display, blood oxygen monitoring, 120+ sport modes, sleep tracking, NFC payments (on select variants), and active OTA software support make it one of the most complete packages available under $100. The Zepp OS ecosystem is a limitation, and the UI has rough edges — but for a health-focused buyer who doesn't need third-party apps, those are acceptable trade-offs for everything else the watch delivers.

If your budget allows stepping up, the Garmin Venu 3 adds a more polished interface, longer battery life, and a deeper training ecosystem. But if $100 is your ceiling, the Amazfit Active 2 is the benchmark everything else in that price range has to beat.