The OnePlus Watch 3 43mm features a refined stainless-steel frame with a modern circular design that feels more elegant and less bulky than the larger model. It measures 43.2 × 43.2 × 11 mm and weighs about 37.8g (without strap), making it ideal for smaller wrists and all-day comfort, including sleep tracking. It also comes in Black Steel and Silver Steel color options and supports 5ATM water resistance (up to 50m) and IP68 protection.
Display
It sports a 1.32-inch AMOLED display with a sharp 466 × 466 resolution and around 1000 nits peak brightness, ensuring good visibility indoors and outdoors. The smaller size still keeps the interface crisp and responsive for notifications, apps, and fitness tracking.
Performance and Software
Under the hood, the watch is powered by the Qualcomm Snapdragon W5 Gen 1 chipset, paired with 2GB RAM and 32GB storage. It runs on Wear OS (with RTOS integration), which helps balance performance and battery efficiency. This dual-system setup allows smooth everyday use while conserving power when needed.
Health and Fitness Features
The OnePlus Watch 3 43mm includes a wide range of health sensors such as:
- Heart rate monitoring
- SpOâ‚‚ (blood oxygen) tracking
- Accelerometer and gyroscope
- Barometer and compass
It also supports fitness tracking, GPS navigation, sleep monitoring, and other wellness features for daily health insights.
Battery Life
The watch is equipped with a 354mAh battery, offering strong endurance for its size:
- Up to ~2–3 days in full smartwatch mode
- Up to about a week in power-saving mode
This makes it one of the better-performing compact Wear OS watches in terms of battery life.
Connectivity
It includes Bluetooth 5.2, Wi-Fi, GPS, and NFC, allowing seamless pairing, contactless payments, and accurate location tracking during workouts.
Key Features Summary
- 1.32-inch AMOLED display (466 × 466)
- Snapdragon W5 Gen 1 chipset
- 2GB RAM + 32GB storage
- Wear OS with RTOS optimization
- 354mAh battery with multi-day life
- Heart rate, SpOâ‚‚, GPS, and fitness tracking
- IP68 + 5ATM water resistance
- Lightweight 37.8g compact design
Conclusion
The OnePlus Watch 3 43mm is designed for users who want a premium smartwatch experience in a smaller, more comfortable size. It delivers strong performance, solid health tracking, and impressive battery life for a Wear OS device, making it a great option for everyday wear without the bulk of larger smartwatches.
