Optimised for smaller wrists, the OnePlus Watch 3 43mm features a refined stainless steel body, advanced health tracking, and impressive battery life.
OnePlus Watch 3 43mm
Earlier this year, OnePlus launched its flagship smartwatch, the OnePlus Watch 3. This original iteration, measuring a substantial 46mm and weighing approximately 81g with its strap, was engineered for performance and comprehensive health monitoring.
Boasting a vibrant 1.50-inch LTPO AMOLED display with a peak brightness of 2200 nits, encased in sapphire crystal and a stainless steel body with a titanium alloy bezel, it offered a premium feel.
Powered by a dual-engine architecture featuring the Snapdragon W5 chip, it boasted all the features a smartwatch in 2025 needs to be a success, apart from size options. The new OnePlus Watch 3 43mm has now been launched to change that.
Features OnePlus Watch 3 43mm
The market has long seen a compromise when it comes to compact smartwatches; smaller form factors have traditionally meant a reduction in features or battery life. Feedback from the OnePlus community highlighted this very gap: a strong demand for a more compact version of their powerful smartwatch that did not dilute the core experience. Step forward the new 43mm model!
This new model is specifically designed to integrate flagship features into a smaller, sleeker design for more diminutive wrists.
The OnePlus Watch 3 43mm retains a minimalist design philosophy, elegantly blending the sophistication of classic timepieces with cutting-edge technology. It features a refined stainless steel body and a 1.32-inch display, and weighs just 37.8 grams (excluding the strap).
The watch crystal features a 2.5D micro-curved design and screen-printed 12-hour indices, enhancing precision time-reading and echoing the charm of traditional watches. The 43mm model will be available in a Black or Silver Steel finish.
A key distinguishing feature of the OnePlus Watch 3 43mm is its upgraded ‘Mind & Body Evaluation‘ tracking, offering a focus on not just physical, but also psychological wellbeing. This enhanced health monitoring system features a real-time barometer that intelligently assesses your body’s level of fatigue every 30 minutes, providing valuable insights into your mental state.
It also meticulously tracks daily stress patterns, helping users identify key factors influencing their stress levels. To aid in stress relief, the watch offers guided one-minute breathing sessions with real-time feedback on the body’s response.
In terms of workout tracking, the 43mm model maintains the comprehensive capabilities of its larger sibling, offering over 100 sports modes and detailed metrics for professional activities such as running, skiing, and swimming, ensuring precise tracking for every movement.
The Watch 3 43mm will deliver an impressive battery life of up to 60 hours, which is close to the quoted five days for its larger sibling.
Specifications OnePlus Watch 3 43mm
| Features | OnePlus Watch 2 |
|---|---|
| Dimensions | 43.2 x 43.2 x 11 mm |
| Weight | 37.8 g |
| Colour Options | Silver Steel Black Steel |
| Display | 1.32-inch AMOLED 466 x 466 pixels 1000 nits (peak) |
| Processor | Snapdragon W5 Gen 1 BES2800BP MCU |
| RAM/Storage | 2GB RAM 32GB ROM |
| Operating System | Wear OS by Google RTOS (dual-engine) |
| Battery Life | Up to 60 hours (Smart Mode) Up to 7 days (Power Saver Mode) |
| Health Tracking | Mind & Body Evaluation Barometer (Fatigue) Stress Patterns Guided Breathing HR SpO2 Sleep Tracking |
| Durability | 5ATM Water Resistant IP68 Dust & Water Resistant |
| Connectivity | Bluetooth 5.2 Wi-Fi (a/b/g/n) NFC GPS, GLONASS GALILEO, BDS, QZSS |
| In the Box | Watch body Charging base Strap Safety Guide Quick Start Guide USB-C Cable |
| Website | oneplus.com |
Price & Availability OnePlus Watch 3 43mm
The OnePlus Watch 3 43mm is priced at $299/£269 and is available now at oneplus.com and local Amazon stores.
The OnePlus Watch 3 43mm is a more compact version, featuring a smaller 43mm design and a lighter weight, specifically crafted to fit smaller wrists while retaining flagship features.
This feature provides comprehensive wellbeing monitoring, including real-time fatigue assessment via a barometer, daily stress pattern tracking, guided breathing sessions, and personalised prompts to improve mental and physical health.
It boasts a minimalist design with a stainless steel body, a 1.32-inch 2.5D micro-curved display, screen-printed 12-hour indices, and is available in Silver Steel.
The watch offers up to 60 hours in Smart Mode and up to 7 days in Power Saver Mode, ensuring extended use.
The OnePlus Watch 3 43mm was launched on 8 July 2025.
Yes, it maintains comprehensive workout tracking capabilities, offering detailed metrics and support for a wide range of activities.
