Apple Watch SE 3
OnePlus Watch 3 43mm

Apple Watch SE 3 OnePlus Watch 3 43mm

Common Features

  • Both products have an OLED/AMOLED display.
  • Both products are waterproof.
  • Both products have a 5 ATM ATM rating.
  • Both products have an always-on display.
  • Both products have replaceable watch bands.
  • Both products have a display.
  • Both products have a touch screen.
  • Neither product has sapphire glass display.
  • Both products have a heart rate monitor.
  • Both products have GPS.
  • Both products have an accelerometer.
  • Both products have a compass.
  • Both products have a gyroscope.
  • Neither product has a cadence sensor.
  • Neither product monitors perspiration.
  • Both products track sleep.
  • Both products track distance.
  • Both products track steps taken.
  • Both products measure pace.
  • Both products provide sleep reports.

Main Differences

  • Apple Watch SE 3 has a 1.78″ screen size while OnePlus Watch 3 43mm has a 1.32″ screen size.
  • Apple Watch SE 3 has an IP68 Ingress Protection rating while OnePlus Watch 3 43mm has an IP67 rating.
  • Apple Watch SE 3 has a pixel density of 326 ppi while OnePlus Watch 3 43mm has a pixel density of 352 ppi.
  • Apple Watch SE 3 has a resolution of 368 x 448 px while OnePlus Watch 3 43mm has a resolution of 466 x 466 px.
  • Apple Watch SE 3 has branded damage-resistant glass while OnePlus Watch 3 43mm does not.
  • Apple Watch SE 3 is 10.7 mm thick while OnePlus Watch 3 43mm is 11 mm thick.
  • Apple Watch SE 3 weighs 33 g while OnePlus Watch 3 43mm weighs 37.8 g.
  • Apple Watch SE 3 has a height of 44 mm while OnePlus Watch 3 43mm has a height of 43.2 mm.
  • Apple Watch SE 3 has a width of 38 mm while OnePlus Watch 3 43mm has a width of 43.2 mm.
  • Apple Watch SE 3 has a volume of 17.8904 cm³ while OnePlus Watch 3 43mm has a volume of 20.52864 cm³.
  • Apple Watch SE 3 does not monitor blood oxygenation levels while OnePlus Watch 3 43mm does.
  • Apple Watch SE 3 has a temperature sensor while OnePlus Watch 3 43mm does not.
  • Apple Watch SE 3 has a barometer while OnePlus Watch 3 43mm does not.
  • Apple Watch SE 3 has multi-sport mode while OnePlus Watch 3 43mm does not.
  • Apple Watch SE 3 does not track calorie intake while OnePlus Watch 3 43mm does.
  • Apple Watch SE 3 has a cellular module while OnePlus Watch 3 43mm does not.
  • Apple Watch SE 3 is compatible with iOS while OnePlus Watch 3 43mm is not.
  • Apple Watch SE 3 is not compatible with Android while OnePlus Watch 3 43mm is.
  • Apple Watch SE 3 has Bluetooth version 5.3 while OnePlus Watch 3 43mm has Bluetooth version 5.2.
  • Apple Watch SE 3 supports Wi-Fi while OnePlus Watch 3 43mm does not.
  • Apple Watch SE 3 has wireless charging while OnePlus Watch 3 43mm does not.
Specs Comparison
Apple Watch SE 3

Apple Watch SE 3

OnePlus Watch 3 43mm

OnePlus Watch 3 43mm

Design:
screen size 1.78" 1.32"
Display type OLED/AMOLED OLED/AMOLED
water resistance Waterproof Waterproof
ATM rating 5 ATM 5 ATM
Ingress Protection (IP) rating IP68 IP67
Always-On Display
pixel density 326 ppi 352 ppi
resolution 368 x 448 px 466 x 466 px
Watch band is replaceable
has branded damage-resistant glass
thickness 10.7 mm 11 mm
weight 33 g 37.8 g
height 44 mm 43.2 mm
width 38 mm 43.2 mm
Has a display
has a touch screen
Has sapphire glass display
volume 17.8904 cm³ 20.52864 cm³

The Apple Watch SE 3 and OnePlus Watch 3 43mm have similar display technology, both using OLED/AMOLED panels and offering Always-On Display. However, there are differences in screen size and resolution. The Apple Watch SE 3 features a 1.78″ screen with a resolution of 368 x 448 px and a pixel density of 326 ppi. In comparison, the OnePlus Watch 3 43mm has a slightly smaller 1.32″ display with a higher resolution of 466 x 466 px and a pixel density of 352 ppi. This means the OnePlus Watch 3 offers a higher resolution, but the Apple Watch SE 3 has a larger display.

Both devices are built to be water-resistant, with both offering waterproofing, 5 ATM water resistance, and an Ingress Protection (IP) rating. The Apple Watch SE 3 has an IP68 rating, while the OnePlus Watch 3 43mm is rated IP67. The difference in the IP rating indicates that the Apple Watch SE 3 offers slightly better protection against dust and water submersion.

In terms of physical dimensions, the Apple Watch SE 3 is slightly smaller, measuring 44 mm in height, 38 mm in width, and 10.7 mm in thickness, with a weight of 33 g. The OnePlus Watch 3 43mm is 43.2 mm in height, 43.2 mm in width, and 11 mm thick, weighing 37.8 g. This means the OnePlus Watch 3 is slightly bulkier and heavier than the Apple Watch SE 3. Both watches have replaceable bands and share a similar overall build quality, though only the Apple Watch SE 3 features branded damage-resistant glass.

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

When comparing the sensors on the Apple Watch SE 3 and OnePlus Watch 3 43mm, there are some notable differences. The OnePlus Watch 3 includes a sensor to monitor blood oxygenation levels, while the Apple Watch SE 3 does not. Both watches have a heart rate monitor, GPS, an accelerometer, and a gyroscope, ensuring similar tracking capabilities for fitness and movement. However, the Apple Watch SE 3 also features a temperature sensor, compass, and barometer, which are not present on the OnePlus Watch 3. In contrast, the OnePlus Watch 3 lacks a temperature sensor and barometer but does include a blood oxygenation sensor and a compass, which the Apple Watch SE 3 also has.

Neither watch includes a cadence sensor or monitors perspiration, so these two features are not present in either device. While both models are equipped with similar foundational sensors, the Apple Watch SE 3 includes a broader range of environmental sensors such as the barometer, compass, and temperature sensor.

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
Tracks calorie intake
Designed for diving
Designed for golf

Both the Apple Watch SE 3 and the OnePlus Watch 3 43mm are equipped with a comprehensive set of activity tracking features. Both watches track sleep, distance, steps taken, and pace, and they also provide sleep reports and automatically detect activities. They also include a route tracker and track elevation. These features are identical across both products, ensuring a similar experience when it comes to general fitness and activity monitoring.

However, there are a few differences between the two devices. The Apple Watch SE 3 includes a multi-sport mode, which is not available on the OnePlus Watch 3. Additionally, the Apple Watch SE 3 does not track calorie intake, while the OnePlus Watch 3 does. Both watches include exercise tagging, so users can manually track specific workouts, but the Apple Watch SE 3 does not have a calorie tracking function.

Neither watch is designed for diving or golf, so these two activities are not supported by either device. Overall, while both watches offer robust activity tracking, the OnePlus Watch 3 adds calorie tracking, whereas the Apple Watch SE 3 offers multi-sport mode for those interested in a wider variety of exercises.

Connectivity:
has a cellular module
Is compatible with iOS
Is compatible with Android
Bluetooth version 5.3 5.2
supports Wi-Fi
Wi-Fi version Wi-Fi 4 (802.11n) Wi-Fi 4 (802.11n)
supports ANT+
has NFC
supports Galileo

In terms of connectivity, the Apple Watch SE 3 and OnePlus Watch 3 43mm have several differences. The Apple Watch SE 3 includes a cellular module, allowing it to operate independently of a phone, while the OnePlus Watch 3 does not have this feature. The Apple Watch SE 3 is also compatible with iOS devices but is not compatible with Android, whereas the OnePlus Watch 3 is compatible only with Android and not iOS.

Both watches support Bluetooth, but the Apple Watch SE 3 features the newer Bluetooth version 5.3, while the OnePlus Watch 3 uses Bluetooth version 5.2. They both support Wi-Fi 4 (802.11n), though the OnePlus Watch 3 does not have Wi-Fi support at all. Neither watch supports ANT+, but both have NFC functionality, which enables contactless payments and other uses.

Both devices also support Galileo for location tracking, providing accurate navigation and positioning capabilities. While the Apple Watch SE 3 offers a more extensive set of connectivity features with its cellular module and iOS compatibility, the OnePlus Watch 3 provides Android users with solid connectivity options, including Bluetooth, NFC, and Galileo support.

Battery:
battery life 0.75 days 2.5 days
battery life in power save mode 32 hours 168 hours
has wireless charging
has a rechargeable battery
Has a solar power battery
has a removable battery

The Apple Watch SE 3 and OnePlus Watch 3 43mm differ significantly in battery life. The Apple Watch SE 3 offers a battery life of 0.75 days under regular use, which is notably shorter than the OnePlus Watch 3's 2.5 days of battery life. However, the Apple Watch SE 3 has a power save mode that extends its battery life to 32 hours, whereas the OnePlus Watch 3 can last an impressive 168 hours in power save mode.

When it comes to charging features, the Apple Watch SE 3 supports wireless charging, while the OnePlus Watch 3 does not. Both devices feature a rechargeable battery, but neither includes solar power capabilities or a removable battery.

In summary, the OnePlus Watch 3 offers a significantly longer battery life, both in regular use and power save mode, while the Apple Watch SE 3 provides the convenience of wireless charging.

Features:
release date September 2025 July 2025
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 silent alarm
Has vibrating alerts
has fall detection
Has a stopwatch
Has smart alarm
has voice commands
internal storage 64GB 32GB
Has a built-in camera remote control function
Acquires GPS faster
has a front camera

When comparing the features of the Apple Watch SE 3 and the OnePlus Watch 3 43mm, there are several similarities and differences. Both watches measure resting heart rate, offer fast/slow heart rate notifications, provide call functionality with call control, support notifications, and include vibrating alerts. They also both have a stopwatch and voice commands. However, the Apple Watch SE 3 includes features such as irregular heart rate warnings, fall detection, and silent alarms, which the OnePlus Watch 3 lacks. In contrast, the OnePlus Watch 3 offers the ability to measure VO2 max and shows a readiness level, which the Apple Watch SE 3 does not.

Both devices also support answering calls and controlling calls, though the Apple Watch SE 3 goes further with its silent alarm and fall detection features, providing a higher level of safety for users. The OnePlus Watch 3 lacks fall detection but does include a readiness level feature, which may be valuable for some users tracking overall fitness.

In terms of storage, the Apple Watch SE 3 offers more internal storage, with 64GB compared to the OnePlus Watch 3's 32GB. Both watches have a built-in camera remote control function, and neither has a front camera. Both watches acquire GPS at similar speeds, with no significant advantage noted for either device.

App & Software:
Provides activity reports
Has inactivity alerts
Counts how many calories you've burned
Has goal setting
Has achievements
Has barcode scanner on app
Tracks water intake
Has weight tracking

The Apple Watch SE 3 and OnePlus Watch 3 43mm both provide activity reports, inactivity alerts, calorie counting, goal setting, and achievements. These features are identical on both devices, allowing users to track their activity levels and progress effectively. Neither device includes a barcode scanner on the app.

There are some differences between the two watches in terms of tracking features. The OnePlus Watch 3 tracks water intake and has weight tracking capabilities, whereas the Apple Watch SE 3 does not provide either of these features. The Apple Watch SE 3 focuses on activity tracking without offering specific monitoring for water intake or weight.

In summary, both watches offer strong activity and fitness tracking features, with the OnePlus Watch 3 adding water intake and weight tracking, while the Apple Watch SE 3 focuses on other aspects of activity tracking without those specific functions.

Miscellaneous:
has a battery level indicator
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

Both the Apple Watch SE 3 and the OnePlus Watch 3 43mm include a battery level indicator, allowing users to easily monitor battery status. However, they differ in terms of compatibility and additional features. The Apple Watch SE 3 is compatible with Mac OS X but not with Windows, while the OnePlus Watch 3 is not compatible with either Mac OS X or Windows.

Neither watch has an external memory slot or a socket for a 3.5 mm audio jack, so users will not be able to expand storage or connect wired headphones directly to either device.

In summary, the key differences in this group are the Apple Watch SE 3's compatibility with Mac OS X, which the OnePlus Watch 3 lacks, and the fact that both watches have the same limitations regarding external memory and audio connectivity.

Comparison Summary

This is a specification comparison between Apple Watch SE 3 and OnePlus Watch 3 43mm. Both watches feature an OLED/AMOLED display, are waterproof with a 5 ATM ATM rating, and have a replaceable watch band. The Apple Watch SE 3 has a larger screen size of 1.78″, while the OnePlus Watch 3 43mm offers a 1.32″ screen. The Apple Watch SE 3 supports multi-sport mode, unlike the OnePlus Watch 3 43mm. Additionally, the Apple Watch SE 3 has a cellular module and is compatible with iOS, while the OnePlus Watch 3 43mm supports Android and lacks a cellular module. The Apple Watch SE 3 also features wireless charging, which the OnePlus Watch 3 43mm does not.