OnePlus Watch 3 Review: Best Android Smartwatch 2025

The OnePlus Watch 3 has arrived, and it’s making waves in the smartwatch market for all the right reasons. Positioned as a premium wearable with robust battery life, flagship-level design, and advanced health tracking, this Android smartwatch might just be the best of 2025. Let’s dive into a full OnePlus Watch 3 review covering design, performance, features, and everything else you need to know.

A Stylish Powerhouse: Design & Display

The OnePlus Watch 3 sports a stunning 47mm stainless steel case with a titanium bezel and sapphire crystal glass. It looks premium on the wrist and offers military-grade durability (MIL-STD-810H), IP68 water resistance, and 5ATM waterproofing—making it both rugged and stylish.

The 1.43-inch LTPO AMOLED display offers an ultra-bright 2200 nits peak brightness, making it easily visible under direct sunlight. The rotating crown adds a classy touch and improves navigation.

Performance That Lasts

Powered by a dual-chip system—Snapdragon W5 and a secondary low-power MCU—the Watch 3 offers an efficient balance between performance and battery life. It runs on Wear OS 5 with a layer of RTOS for extended power-saving capabilities.

The 631mAh battery provides an impressive 4–5 days of usage on regular mode and up to 15 days in Power Saver mode. Quick charge functionality gives 24 hours of battery life in just 10 minutes, making it ideal for users on the go.

Packed With Smart Features

This OnePlus smartwatch is not just about looks—it’s a fitness and health tracking beast. The Watch 3 comes equipped with:

Heart rate monitoring
SpO₂ (blood oxygen) tracking
Wrist temperature sensor
Sleep and breathing analysis
Vascular health insights
Stress monitoring
Dual-frequency GPS for pinpoint outdoor tracking

Additionally, it supports over 100 workout modes, making it a great companion for runners, cyclists, swimmers, and gym-goers alike.

Operating System and Connectivity

The OnePlus Watch 3 runs on Wear OS 5, offering smooth app integration, Google Assistant support, and seamless Android syncing. It features Wi-Fi, Bluetooth 5.2, NFC, and high-precision GPS with support for multiple satellite systems.

While it lacks LTE or eSIM support, it delivers solid performance for users who don’t need on-wrist cellular calls or data.

OnePlus Watch 3 Specifications Table

Feature	Details
Display	1.43″ LTPO AMOLED, 466×466 px
Brightness	Up to 2200 nits
Processor	Snapdragon W5 + Low-power MCU
RAM & Storage	2 GB RAM, 32 GB internal storage
Battery	631 mAh (4–5 days usage)
Water Resistance	IP68, 5ATM
OS	Wear OS 5 + RTOS
Health Tracking	HR, SpO₂, Temp, ECG (global), Sleep
GPS	Dual-frequency (L1+L5)
Case Material	Stainless steel + titanium bezel

OnePlus Watch 3 FAQs

1. How long does the OnePlus Watch 3 battery last?
The battery lasts up to 5 days in normal mode and around 15 days in power-saving mode. It also offers a fast charge that gives 24 hours of use in just 10 minutes.

2. Is the OnePlus Watch 3 waterproof?
Yes, it has IP68 and 5ATM ratings, which make it swim-proof and suitable for outdoor sports.

3. Does it support iPhones?
No. The OnePlus Watch 3 is compatible only with Android smartphones.

4. Can you make calls from the Watch 3?
You can receive and make calls via Bluetooth when connected to your phone. However, it does not support LTE or eSIM functionality.

5. Is ECG supported?
Yes, but it may not be active in all regions due to local regulations. Global variants generally support ECG features.

6. Is there a smaller version available?
Yes, a 43mm version with similar specs but a smaller battery is scheduled to launch soon.

The OnePlus Watch 3 combines elegant design, powerful hardware, and unmatched battery life to offer one of the best Android smartwatches of 2025. Though it lacks LTE and may feel bulky on smaller wrists, its performance and health features more than make up for it. Whether you’re a fitness enthusiast or a tech lover, this smartwatch is a smart choice.