OnePlus Watch 3 Review: Finally a Great OnePlus Smartwatch

I bought the original OnePlus Watch in 2021. It was one of the most frustrating gadget purchases I have ever made. The software was half-baked, the fitness tracking was inaccurate, and it lagged doing basic things like scrolling through notifications. OnePlus, a company I had trusted with my phones since the OnePlus 3, had shipped a product that felt like a beta prototype sold at full price. When they released the OnePlus Watch 2 with Wear OS, I skipped it — partly because the reviews were mixed, partly because I could not trust OnePlus with wearables anymore. So when the OnePlus Watch 3 was announced, my expectations were somewhere between "let me guess, another disappointment" and "I will believe it when I wear it." A friend convinced me to try it. Three months later, I have to admit something uncomfortable: they might have finally figured this out.

A Brief History of OnePlus Watch Disappointments

To understand why the Watch 3 matters, you need to understand what came before it.

The OnePlus Watch (2021) ran a custom RTOS — not Wear OS, not anything recognizable. The app ecosystem was nonexistent. You could not install third-party apps. Notifications were a mess: some apps showed them, others did not, and there was no way to predict which would work. The heart rate sensor was wildly inconsistent — I once checked my heart rate while sitting still and got 112 bpm, then checked again 30 seconds later and got 74 bpm. Sleep tracking was even worse, regularly telling me I had slept for 9 hours on nights when I know I was up until 2 AM.

The OnePlus Watch 2 improved things by switching to Wear OS 4 with a dual-chipset architecture. Reviews praised the battery life but noted inconsistencies in health tracking accuracy and a UI that felt sluggish compared to Samsung and Google watches. I read those reviews, looked at the Rs 24,999 price tag, and decided to wait.

The Watch 3 arrives at Rs 22,999, running Wear OS 5 on the Snapdragon W5 Gen 1 platform. OnePlus claims 4 days of battery life, improved health sensors, and a smoother software experience. I bought it with the mental framework of "prove it."

First Impressions: Build and Design

The Watch 3 is a genuinely good-looking device. The 47mm circular AMOLED display with a 466x466 resolution is sharp — text is crisp, colors are vivid, and the always-on display is bright enough to read in direct sunlight. I was pleasantly surprised by this, because the original OnePlus Watch had a dim display that was nearly invisible outdoors in Indian summer conditions.

The build feels premium. Stainless steel case, sapphire crystal glass, and a rotating crown that has satisfying tactile feedback. At 37 grams (without the strap), it is lighter than the Samsung Galaxy Watch 7 (33.8g for 40mm, 43.4g for 44mm) if you compare against the larger Samsung model. I wear it with the included fluoroelastomer strap during workouts and switch to a third-party leather strap for work. The 22mm standard lug width means strap options are plentiful.

One detail worth noting: the Watch 3 sits slightly thicker on the wrist at 11.75mm compared to the Galaxy Watch 7's 9.7mm. Under shirt cuffs, it occasionally catches. Not a major issue, but if you wear formal shirts to office daily, you will notice it.

Daily Notifications: Which Indian Apps Actually Work

This is the section most Indian buyers care about, and I wish more reviewers covered it honestly. Wear OS 5 handles notifications well in general, but the experience varies significantly depending on which Indian apps you use daily.

Apps That Work Perfectly

• WhatsApp — Notifications arrive instantly. You can read full messages, see images (small thumbnails), and reply with voice-to-text, quick replies, or the tiny keyboard. Voice-to-text works in English reliably. Hindi dictation is hit-or-miss.
• Gmail — Full email preview on the watch. You can archive, delete, and reply. Very functional.
• Google Pay — Notifications for transactions come through. You cannot make payments from the watch itself (no NFC payment support in India yet), but you see confirmations.
• Swiggy and Zomato — Order status notifications work perfectly. "Your rider is on the way" appears on your wrist, which is genuinely useful when you are in the kitchen with wet hands.
• Uber/Ola — Ride confirmations and driver arrival notifications appear. Cannot book rides from the watch.

Apps That Partially Work

• PhonePe — Transaction notifications appear, but they are sometimes delayed by 30-60 seconds compared to the phone notification.
• Instagram — DM notifications show up, but you cannot view stories or posts from the watch. Replies work but are limited to text.
• Telegram — Messages arrive, but group chat notifications can be overwhelming. You will want to fine-tune notification settings per group.
• Paytm — Inconsistent. Sometimes notifications appear, sometimes they do not. I suspect this is related to Paytm's own notification handling rather than the watch.

Apps That Barely Work or Do Not Work

• CRED — Notifications are sporadic at best. Most bill reminders do not come through to the watch.
• Amazon India — Delivery notifications appear maybe half the time. Order confirmation notifications work, delivery tracking does not.
• Banking Apps (HDFC, ICICI, SBI YONO) — OTP notifications are critically delayed. If you rely on your watch for OTPs, do not. By the time the OTP appears on your wrist, you have already picked up your phone.

The overall notification experience is significantly better than any previous OnePlus watch. The fact that WhatsApp works flawlessly — and WhatsApp is essentially India's primary communication tool — makes the Watch 3 genuinely useful as a notification device. On the original OnePlus Watch, WhatsApp notifications were delayed, incomplete, and replies were impossible. The improvement is enormous.

Health Tracking: Heart Rate, SpO2, and Sleep

I will be direct about this: health tracking on the Watch 3 is good, not perfect. Here is how I tested it.

For heart rate accuracy, I wore the Watch 3 on one wrist and a Polar H10 chest strap (considered the gold standard for optical-free HR monitoring) simultaneously for two weeks. During resting measurements, the Watch 3 was consistently within 2-3 bpm of the Polar — which is excellent for a wrist-based sensor. During high-intensity exercise (running above 160 bpm), the Watch 3 occasionally lagged behind the Polar by 5-8 bpm and sometimes showed brief dips that the chest strap did not register. This is typical of wrist-based optical sensors and is not specific to OnePlus.

SpO2 monitoring works but requires you to stay still for about 15 seconds. The readings I got were consistently between 96-99%, which is normal for a healthy person at sea level. I have no medical-grade device to compare against, so I cannot vouch for absolute accuracy. Continuous SpO2 monitoring during sleep is available but drains an additional 5-8% battery overnight.

Sleep Tracking: Finally Usable

Sleep tracking was the area where the original OnePlus Watch was most embarrassingly bad. The Watch 3 is a massive improvement. Over three months, I compared its sleep data against my own manual tracking (I log my sleep and wake times in a journal — old habit).

The Watch 3 correctly identified my sleep onset time within 10-15 minutes on most nights. It occasionally counted quiet reading in bed as light sleep, which inflated total sleep time by 15-20 minutes on those nights. Wake time detection was accurate to within 5 minutes. Sleep stage breakdown (deep, light, REM) roughly matched what I would expect based on how rested I felt, though I have no way to verify this against a clinical sleep study.

The sleep score feature gives you a number out of 100 each morning. After three months, I have found it generally correlates with how I feel — nights where I drank coffee late or slept less than 6 hours produce lower scores. Whether the specific number is scientifically meaningful is debatable, but as a trend indicator, it is useful.

Workout Tracking: Running, Gym, and Cricket

I primarily use the watch for three types of exercise: outdoor running, gym sessions, and tracking occasional cricket matches (gully cricket, not professional — I wish).

Outdoor running: GPS lock takes 8-15 seconds in open areas in Bangalore. In dense urban areas with tall buildings, it can take up to 45 seconds, which is annoying when you are standing on the footpath warming up. Once locked, GPS tracking is reasonably accurate — my usual 5km route shows up correctly on the map with minor deviations (5-10 meters in a few spots). Pace tracking during runs is responsive; I can glance at my wrist and get real-time pace that updates every few seconds.

Gym workouts: The watch auto-detects some exercises — it correctly identified treadmill running, elliptical, and outdoor walking without me starting a workout manually. For strength training, auto-detection is unreliable. I manually start a strength training session and the watch counts reps for common movements like bicep curls and squats. Rep counting accuracy is roughly 80% — it sometimes misses partial reps or counts a rest adjustment as a rep.

Cricket: There is no dedicated cricket mode — and honestly, for a watch targeting the Indian market, this feels like an oversight. I use "Other Workout" mode, which basically just tracks heart rate and duration. Samsung's Galaxy Watch 7 does not have a cricket mode either, so this is an industry-wide gap rather than a OnePlus-specific failure. But someone should fix this. Cricket is literally the most popular sport in the country.

Wear OS 5: The Software Experience

Wear OS 5 on the Watch 3 is the most fluid smartwatch software I have used on a non-Samsung, non-Google device. Swiping between tiles is smooth, opening apps takes 1-2 seconds, and the rotating crown provides a responsive way to scroll through lists and notifications.

The Google Play Store on the watch gives you access to a reasonable app selection. I have installed Google Maps (useful for navigation vibrations on my wrist while riding a scooter through Bangalore traffic), Spotify (offline playlist sync works), and a calculator (more useful than I expected). The app library is nowhere near what Apple Watch offers, but for Wear OS, it is serviceable.

OnePlus has added some of their own customizations. The watch faces are well-designed — I rotate between three, and all of them offer useful complications (weather, step count, heart rate, battery). The OHealth app on the phone provides a clean dashboard of health data, though I wish it integrated with Google Fit more directly. Currently, you need to manually sync data, which is a step I sometimes forget.

One genuine software frustration: Google Assistant on the Watch 3 is slow. From the time I activate it (long press on the crown) to the time it processes my command, there is a 3-4 second delay. This makes it impractical for quick tasks. Siri on Apple Watch and Bixby on Samsung watches both respond faster. I have largely stopped using voice commands on the watch because of this.

Battery Life: The Claim vs Reality

OnePlus claims 4 days of battery life. In my real-world usage, here is what I actually get:

My daily usage pattern:

• Always-on display: ON
• Heart rate monitoring: Every 10 minutes
• Sleep tracking: Every night
• Notifications: ~80-100 per day (yes, I get a lot of WhatsApp messages)
• One 30-45 minute tracked workout: 4-5 days per week
• GPS: Used during outdoor runs only (2-3 times per week)
• SpO2 continuous: OFF

Actual battery life: 2.5 to 3 days consistently.

If I turn off always-on display and reduce heart rate monitoring to every 30 minutes, I can stretch it to 3.5 days. I have never hit the claimed 4 days with my usage pattern. The 4-day claim likely assumes AOD off, minimal notifications, no GPS workouts, and infrequent heart rate checks — basically, using it as a fancy digital clock.

Charging is fast, though. The included magnetic charger takes the watch from 0% to 100% in about 55 minutes. A 10-minute charge gives roughly 20% battery, which is enough for a day if you forgot to charge overnight. I keep the charger on my nightstand and charge every other night.

Comparison with Samsung Galaxy Watch 7

The Galaxy Watch 7 (44mm, Bluetooth) retails at approximately Rs 26,999 in India. Here is how it stacks up against the OnePlus Watch 3 at Rs 22,999.

The Galaxy Watch 7 wins on health sensor variety — the BIA sensor for body composition and ECG are features the OnePlus Watch 3 simply does not have. Samsung's health ecosystem through Samsung Health is also more mature, with better integration with Indian health apps and insurance platforms.

Where the OnePlus Watch 3 wins clearly is battery life and price. Getting an extra full day of battery life and saving Rs 4,000 is a meaningful difference. If your priority is a watch that lasts through your week without constant charging anxiety, the OnePlus Watch 3 is the better pick. If health monitoring depth matters more to you, the Galaxy Watch 7 justifies its premium.

For OnePlus phone owners specifically, the Watch 3 integrates better with OxygenOS. You can control your phone's camera shutter from the watch, manage media playback with better controls, and the initial setup is faster. These are minor conveniences, but they add up in daily use.

What Still Needs Work

Despite my overall positive experience, there are things that need improvement, and I want to list them clearly because OnePlus has a pattern of strong launches followed by neglected software support.

Third-party watch face support is limited. The built-in faces are fine, but the selection on the Play Store for this specific watch is thin compared to Samsung watches. If you like customizing your watch face frequently, you will run out of good options quickly.

The OHealth app needs work. It is functional but lacks the polish of Samsung Health or even Google Fit. Data visualization is basic, historical trends are hard to read, and exporting your health data is not straightforward. For a company that wants to build a health ecosystem, the app feels like an afterthought.

No offline maps. Google Maps on the watch requires a phone connection for navigation. If your phone dies mid-ride, the watch cannot guide you home. Samsung and Apple watches have the same limitation, but it is still worth noting.

Alarm vibration is weak. I tried using the watch as a silent alarm to wake up without disturbing my wife. The haptic motor is not strong enough — I slept through it twice before giving up and going back to my phone alarm. The Galaxy Watch 7's haptic motor is noticeably stronger for alarms.

Hindi language support on the watch is incomplete. Notifications in Hindi display correctly (Devanagari script renders fine), but the voice keyboard does not transcribe Hindi accurately, and the watch interface itself is only available in English. For a product sold predominantly in India, full Hindi (and other regional language) UI support should be a priority.

The Elephant in the Room: OnePlus Product Longevity

Here is my biggest concern, and it is not about the hardware or the current software — both are good. My concern is about what happens in 18 months.

OnePlus has a documented pattern with non-phone products. The OnePlus Watch (2021) received minimal software updates after launch and was effectively abandoned within a year. The OnePlus Buds Pro had firmware updates slow to a trickle after 8 months. Even OnePlus TVs, which were launched with enthusiasm, have seen diminishing software support.

The Watch 3, running Wear OS 5, is partially protected by Google's platform updates. But OnePlus-specific features, health algorithm improvements, and bug fixes depend entirely on OnePlus's commitment. And that commitment has historically been unreliable for non-phone products.

Samsung, by contrast, supports its Galaxy Watch lineup for 4 years of OS updates. Google supports the Pixel Watch for 3 years. OnePlus has not made a clear public commitment for the Watch 3's update timeline. When I contacted OnePlus support to ask, I got a generic response about "committed to providing the best experience" without any specific timeframe.

This matters because a smartwatch you wear daily, tracking your health data over years, needs to remain secure and functional. If OnePlus stops pushing security patches after a year, you are wearing an increasingly vulnerable device on your wrist that is connected to your phone, your notifications, and your health data.

Three Months In: Where I Stand

The OnePlus Watch 3 is the first OnePlus wearable I would actually recommend to another OnePlus phone user. The notification handling works for Indian apps that matter. The health tracking is accurate enough for someone who wants trends, not clinical data. The battery life means I charge it every third night instead of every night. The build quality feels like it belongs in the Rs 25,000-30,000 range despite costing Rs 22,999.

But I am recommending it with an asterisk, and that asterisk is OnePlus's history. If they support this product the way they support their phones — with regular updates, bug fixes, and feature additions — then the Watch 3 is an excellent value proposition that undercuts Samsung meaningfully. If they repeat their pattern of launching well and abandoning quietly, then buyers will be stuck with a watch that works great today and degrades slowly over the next two years.

I want to be optimistic. The hardware gives me reason to be. The software today gives me reason to be. But the company's track record with everything that is not a smartphone keeps that optimism firmly in check. I will update this review in six months. If the Watch 3 has received meaningful software updates by then, I will upgrade my recommendation from cautious to confident. If not — well, at least the hardware will still be nice to look at while it slowly becomes obsolete.