The OnePlus Watch 3 must offer a mix of style, sustainability and functionality and thereby be a good choice for both daily use and sporting activities. Read in the review of the OnePlus Watch 3 or that is true and in which the models of 46 and 43 mm differ.

Aad Munsterman

After the success of the OnePlus Watch 2, OnePlus released the Watch 3 with more new functions. For example, the new version must have an improved design with new materials, a new layout, a curved strap design and an improved algorithm. In addition to the 46 mm version, the version 43 mm that is intended for the smaller wrist recently came out. Read here in which these two models differ.

Design
The OnePlusWatch 3 is available in 46 mm and from 8 July 2025 there is also a version of 43 mm, specifically for the smaller wrist. The 46mm variant is available in two elegant colors: Emerald Titantium with a green band and Obsidian Titanium with a black belt. The 43 mm variant is available as a sporty model in black or an elegant model with Silver Steel cabinet and fashionable white tire. They all have a stainless steel buckle, which strengthens the premium feeling. The closure is easy to adjust for everyone, thanks to a pin that falls in one of the many holes.
The stainless steel housing is reinforced by a titanium alloy edge with a strong PVD coating, which ensures extra durability. The 2.5D-Sapphire crystal glass ensures a clear and scratch-resistant screen. The smartwatch retains the elegant appearance of its predecessor, but does have a single refined improvements. The screen itself has a diameter of 38 resp. 33.5 mm and has 466 x 466 pixels with a maximum brightness of 1000 Nits. Thanks to the energy -efficient optimisations, the screen is not only pleasant to look at, but also contributes to the long battery life.
There are approximately 20 dials available via the Ohealth app and the watch is waterproof (IP68/5 ATM), making it suitable for extreme conditions.

Duration
One of the biggest plus points of the OnePlus Watch 3 is the battery life. In Smart Mode the watch lasts up to 5 days, while the energy saving mode extends the lifespan to no less than 16 days before the 46 mm and 7 days for the 43 mm model. That is striking, because many watches in this class have to be charged (almost) every day. Moreover, the fast charging technology ensures that a charging of just 10 minutes is sufficient for a full day of use. A USB-C charging cable with the magnetic ‘charging round’ is included, the plug does not.

Performance
These achievements are possible thanks to the Dual-Engine architecture, consisting of the Snapdragon W5 ‘Performance’ chipset and the BES2800 MCU ‘Efficiency’ chipset. Together these chipsets ensure smooth operation without unnecessary energy consumption. In addition, the battery capacity has been increased to 631 MAH, which has a positive influence on the efficiency and speed of the watch. Due to the smaller housing, the 43 mm model has a smaller battery of 345 mAh. The smartwatch has 2 GB of memory and 32 GB of storage space. WiFi is available up to and including Wi-Fi 4 and Bluetooth with 5.0. NFC is available for use in combination with Google Wallet, so that you can make contactless payments with your smartwatch.

Health and fitness
The OnePlus Watch 3 has a series of health functions, including heart rate measurement, blood oxygen monitoring, sleeping tracking and now also polish measurement measurement. Thanks to the improved sensors, measurements are even more accurate, which gives athletes and health -conscious users extra insight into their performance and well -being.
The smartwatch also offers support for 100+ sports fashion, including 11 professional sports modes. From running and cycling to skiing and yoga. Renewed is the “Mind & Body Evalution” to make health and well -being easier to monitor. The ECG app and the app for the 60-second health check is not yet available in NL and is waiting for approval.

Google Wear OS
Wear OS is the Google platform for simple coupling and synchronization with Android smartphones and control of all tasks of a smart watch with an extensive set of functions and workouts. A standard set of apps is installed including Google Assistant, Wallet and Maps; In addition, there are many extra apps to install.
Thanks to the improved antenna designs, the OnePlus Watch 3 offers stable and connectivity, so that notifications, music controls and contactless payment work effortlessly.

Conclusion
With the Watch 3, OnePlus creates an impressive smartwatch. The stylish design, the powerful battery and the extensive health functions make this watch a good choice for users who are looking for a reliable smartwatch. The OnePlus Watch 3 of many competitors in particular distinguishes the longer battery life. In combination with a OnePlus phone, there is extra functionality. It is only for use with Android telephones and is available in two sections.

Suggested retail price: 46 mm € 349; 43 mm € 299,-

4 stars

Plus points:
+ impressive battery life (up to 16 days)
+ stylish and sustainable design
+ powerful and efficient chipset
+ extensive health and sports functions
+ Fast charging technology

Cons:
– Only for Android
– Full functionality in combination with OnePlus phone
– No LTE option