OnePlus Watch 3: A Smartwatch with Health Features and Long Battery Life

OnePlus Watch 3 has a 1.5-inch AMOLED LTPO display, a 631 mAh battery and more than 100 sports modes. Alongside activity tracking, it offers health features including a vascular health test.

Materials and controls

The watch body combines a titanium frame with stainless steel. Sapphire glass protects the display and helps limit scratches during everyday wear. A rotating crown provides another way to navigate the watch without relying solely on touch controls.

Display, software and performance

The 1.5-inch AMOLED LTPO display reaches a brightness of up to 2,200 nits. Its high brightness helps with outdoor visibility, such as when checking a workout in the sun.

The watch combines Wear OS 5 with a real-time operating system (RTOS). Wear OS provides access to apps, while RTOS supports more energy-efficient operation. The hardware includes a Snapdragon W5 processor and a BES2800BP chipset.

Battery life and charging

The 631 mAh battery delivers up to five days in smart mode or up to 16 days in the power-saving RTOS mode, which limits some features. Actual battery life depends on usage and settings.

Fast charging is designed to provide enough power for a full day in 10 minutes. This can be useful when there is no time to fully charge the watch before heading out.

GPS and contactless payments

The GPS module uses a circularly polarized antenna intended to help improve positioning accuracy. This can be useful when recording routes, particularly in cities where buildings can interfere with satellite signals.

The watch supports NFC and contactless payments through Google Pay. Payment availability depends on support for the service and the payment card in the relevant region.

Health features and sports

OnePlus Watch 3 tracks wrist temperature and has an 8-channel heart rate sensor and a 16-channel blood oxygen sensor. Its vascular health test includes an assessment of arterial stiffness.

A 60-second health test provides an overview of several indicators, including sleep quality data. This does not mean the watch can measure sleep quality in one minute. Health feature results are intended as a guide and do not replace a medical examination or diagnosis. ECG is available only in certain regions.

For activity tracking, the watch offers more than 100 sports modes, including 11 professional modes. These cover recreational activities as well as more specialized training. The combination of Wear OS apps, health features and an optional power-saving mode with longer battery life are key considerations when choosing the watch.