OnePlus Watch 2 specifications and in-depth review

OnePlus Watch 2

Manufacturer: OnePlus

The OnePlus Watch 2 is a feature-rich smartwatch built around a 1.43″ AMOLED display with a resolution of 466 x 466 px and a pixel density of 326 ppi. Housed in a 47 mm case that weighs 80 g and measures 12.1 mm thick, it carries a sapphire glass display and supports an always-on mode. The watch band is replaceable and measures 22 mm in width, giving users some flexibility in how they wear it. With 32 GB of internal storage and 2 GB of RAM, it sits at a notably capable end of the smartwatch spectrum in terms of onboard resources.

On the connectivity side, the OnePlus Watch 2 supports Bluetooth 5, Wi-Fi 4 (802.11n), NFC, and Galileo satellite positioning alongside GPS, though it lacks a cellular module and is compatible with Android only. Its 500 mAh rechargeable battery is rated for around 4.1 days of typical use, up to 48 hours with GPS active, and up to 288 hours in power-saving mode, with a charge time of approximately one hour. The sensor suite includes a heart rate monitor, pulse oximeter, accelerometer, gyroscope, barometer, and compass. Activity tracking covers steps, distance, pace, sleep, routes, food intake, and water consumption, while the companion app offers goal setting, exercise diary, inactivity alerts, calendar sync, and music playback, all without ads and at no cost.

Pros
  • Sapphire glass display offers durable screen protection without relying on branded glass coatings
  • 500 mAh battery stretches to 288 hours in power-save mode and charges fully in around one hour
  • 32 GB of internal storage and 2 GB of RAM give the watch notably generous onboard resources for its category
  • IP68 rating and 5 ATM water resistance with a 50 m depth rating make it suitable for water-based activities
  • Companion app is free, ad-free, and covers a wide range of tracking including sleep, water intake, weight, and calorie burn
  • Fast GPS lock alongside Galileo satellite support broadens location tracking reliability
Cons
  • Compatible with Android only, leaving iOS users without support
  • No cellular module means the watch depends entirely on a paired phone for mobile connectivity
  • Lacks HRV tracking, VO2 max measurement, ECG, and irregular heart rate warnings, limiting advanced health monitoring
  • No multi-sport mode or elevation tracking, which may restrict usefulness for users with varied or outdoor-focused training routines
  • Does not support ANT+, ruling out connection to a range of third-party fitness accessories
  • Fall detection, voice commands, and smart alarm are all absent
Who is this for?

This watch suits Android users looking for a capable daily companion that handles health and activity tracking across a solid range of metrics — steps, sleep, heart rate, blood oxygen, pace, and more — without needing a specialist device. Its IP68 rating, 5 ATM water resistance, and 50 m depth rating make it a practical fit for users who swim or regularly encounter wet conditions. The generous 32 GB of internal storage and fast GPS lock also appeal to users who want to store music locally and track outdoor activities like running or cycling with reliable positioning. Those who value a long-lasting battery will find the power-save mode's 288-hour ceiling and the one-hour charge time particularly convenient for everyday wear.

Who is this NOT for?

Users who rely on an iPhone will find this watch entirely incompatible, as it supports Android only. Serious athletes or fitness enthusiasts seeking advanced performance metrics such as VO2 max, HRV tracking, ECG, or multi-sport mode will find the feature set too limited for dedicated training use. The absence of a cellular module makes it a poor fit for users who want to stay connected independently of their phone — whether for calls, messaging, or data while out. Similarly, those looking for specialized outdoor capabilities like elevation tracking or fall detection will need to look elsewhere.

Design:

screen size 1.43"
Display type OLED/AMOLED
water resistance Waterproof
ATM rating 5 ATM
Ingress Protection (IP) rating IP68
waterproof depth rating 50 m
Always-On Display
pixel density 326 ppi
resolution 466 x 466 px
Watch band is replaceable
has branded damage-resistant glass
thickness 12.1 mm
weight 80 g
height 47 mm
width 47 mm
Has a display
has a touch screen
Has sapphire glass display
volume 26.7289 cm³
is designed for kids
width of band 22 mm

The OnePlus Watch 2 features a 1.43″ OLED/AMOLED touchscreen with a resolution of 466 x 466 px and a pixel density of 326 ppi, and it supports an always-on display mode. The case measures 47 x 47 mm with a thickness of 12.1 mm and a total weight of 80 g, giving it a volume of 26.7289 cm³. Display protection comes courtesy of sapphire glass, though no branded damage-resistant glass is included. The watch band is 22 mm wide and can be replaced, adding some flexibility for users who want to customize their setup. On the durability side, the watch carries an IP68 rating and a 5 ATM water resistance rating, with a waterproof depth of up to 50 m, making it suitable for use in water though not designed for diving.

Sensors:

Monitors blood oxygenation levels
Has a heart rate monitor
has GPS
has an accelerometer
Has a temperature sensor
has a compass
Has a barometer
has a gyroscope
Has a cadence sensor
Monitors perspiration

The OnePlus Watch 2 comes equipped with a solid range of sensors for everyday health and activity monitoring. It includes a heart rate monitor and a pulse oximeter for tracking cardiovascular activity and blood oxygen levels, while a gyroscope and accelerometer handle motion detection. A barometer and compass round out the hardware suite, adding environmental and directional awareness. GPS is also built in, enabling location tracking without relying on a paired phone. The watch does not include a body temperature sensor, cadence sensor, or perspiration monitor.

Activity tracking:

Tracks your sleep
Tracks distance
Tracks steps taken
Measures pace
Provides sleep reports
Detects activities automatically
Has a route tracker
Tracks elevation
Has multi-sport mode
Has exercise tagging
Has a stroke counter for swimming
Tracks calorie intake
Designed for diving
Designed for golf

The OnePlus Watch 2 covers a broad set of everyday activity tracking features, including steps, distance, pace, and sleep tracking with detailed sleep reports. It can detect activities automatically and supports exercise tagging, making it easier to log workouts without manual input. A route tracker is available for recording movement paths, and calorie intake tracking is also supported. On the other hand, the watch does not offer elevation tracking, a swim stroke counter, or multi-sport mode, and it is not designed for diving or golf.

Connectivity:

has a cellular module
Is compatible with iOS
Is compatible with Android
Bluetooth version 5
supports Wi-Fi
Wi-Fi version Wi-Fi 4 (802.11n)
supports ANT+
has NFC
supports Galileo

The OnePlus Watch 2 connects via Bluetooth 5 and supports Wi-Fi 4 (802.11n), along with NFC for short-range interactions. It also supports Galileo satellite navigation, broadening its location capabilities beyond GPS alone. The watch is compatible with Android devices only, with no support for iOS, and it does not include a cellular module, meaning it relies on a paired phone for mobile connectivity. ANT+ is not supported either.

Battery:

battery life 4.1 days
battery power 500 mAh
charge time 1 hours
battery life in power save mode 288 hours
battery life with GPS on 48 hours
has a rechargeable battery
Has a solar power battery
has a removable battery

The OnePlus Watch 2 is powered by a 500 mAh rechargeable battery that is neither removable nor solar-assisted. Under typical use, it is rated for around 4.1 days, while enabling power-save mode extends that figure significantly to 288 hours. With GPS active, battery life sits at up to 48 hours. When it does need charging, the watch reaches a full charge in approximately one hour.

Features:

has HRV tracking
measures VO2 max
measures resting heart rate
has fast/slow heart rate notifications
shows readiness level
Can be used to answer calls
Has call control
Has notifications
has irregular heart rate warnings
Has ECG technology
Has silent alarm
Has vibrating alerts
has fall detection
Has a stopwatch
Has smart alarm
has voice commands
RAM 2GB
internal storage 32GB
Acquires GPS faster
warranty period 1 years
has a front camera

The OnePlus Watch 2 includes 2 GB of RAM and 32 GB of internal storage, which is notable for a smartwatch, and it backs up its GPS functionality with a fast GPS lock feature for quicker positioning. On the health monitoring side, it measures resting heart rate and provides fast and slow heart rate notifications, though it does not offer HRV tracking, VO2 max measurement, ECG technology, irregular heart rate warnings, or readiness and recovery scoring. For communication, the watch can answer calls and has call control alongside wrist notifications, vibrating alerts, and a silent alarm, while a stopwatch is also on board. It does not support voice commands, a smart alarm, or fall detection, and there is no front camera. The watch comes with a one-year warranty.

App & Software:

Provides activity reports
Has inactivity alerts
Counts how many calories you've burned
Has goal setting
Has achievements
Free app
Has exercise diary
Ad-free
Has coaching
Has temperature tracking
Supports routes
Syncs with existing calendars
Has music playback
Exports to email
Doesn’t require account
Supports widgets
Can be personalised
Has barcode scanner on app
Tracks water intake
Has weight tracking

The companion app for the OnePlus Watch 2 is free and ad-free, covering a broad range of tracking and lifestyle features. It provides activity reports, calorie burn tracking, water intake tracking, weight tracking, an exercise diary, and inactivity alerts, along with goal setting and an achievements system to help keep users engaged. The app supports widgets, allows for personalisation, syncs with existing calendars, and includes music playback. An account is required to use the app, and there is no option to export data to email, nor does it include a barcode scanner, temperature tracking, route support, or coaching functionality.

Miscellaneous:

has a battery level indicator
Has passcode
Is compatible with Windows
has an external memory slot
Is compatible with Mac OS X
has a socket for a 3.5 mm audio jack

The OnePlus Watch 2 includes a battery level indicator and supports a passcode for basic security. It does not have an external memory slot, a 3.5 mm audio jack, or compatibility with Windows or Mac OS X.

Final Verdict

The OnePlus Watch 2 is a well-rounded Android smartwatch that punches above its category in terms of hardware resources, pairing a sapphire glass display with 32 GB of internal storage, fast GPS lock, and a versatile battery system that balances everyday endurance with a quick one-hour charge. Its health and activity tracking covers the needs of most general users, and its water resistance credentials make it a practical choice for those with an active lifestyle. Where it falls short is in advanced fitness metrics and independent connectivity — the lack of cellular support and the absence of features like VO2 max, HRV, and multi-sport mode place it outside the consideration set for serious athletes or users who want a phone-free experience. For the Android user who wants a feature-rich daily wearable with solid build quality and broad tracking capabilities, the OnePlus Watch 2 represents a confident and capable option.

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