OnePlus Watch 4 Leaks With IP69 Rating — The Toughest Android Smartwatch Yet?

Most smartwatches are built to survive a splash in the pool. The OnePlus Watch 4 apparently wants to survive an industrial car wash. A new certification leak has revealed that OnePlus's next wearable will feature an IP69 durability rating — a significant upgrade that puts it in a class of toughness normally reserved for much more expensive watches.

What IP69 Actually Means

You've probably seen IP68 ratings on your phone and smartwatch. That certification means a device can handle dust exposure and submersion in water up to a certain depth for a limited time. It's the standard you see on everything from the Galaxy Watch 8 to the Google Pixel Watch 4.

IP69 is a different beast entirely. The '9' in that second digit means the device has been tested against high-pressure, high-temperature water jets. We're talking about pressurized streams of water at up to 80°C (176°F) sprayed from close range. It's the certification you see on industrial equipment, outdoor construction sensors, and vehicles that need cleaning with pressure washers.

For a smartwatch, IP69 is borderline overkill in the best possible way. It means you could theoretically take a pressure washer to your Watch 4 and it would keep ticking. Whether you'd want to is another question entirely, but the engineering confidence behind that rating is impressive.

The Specs Sheet Looks Familiar (In a Good Way)

Tipster Sudhanshu Ambhore uncovered the Watch 4 (model number XL905) on the EMVCo certification database, along with a detailed specifications sheet. Here's what's coming:

The processor is the Qualcomm Snapdragon W5 Gen 1 — the same chip found in the OnePlus Watch 3. This isn't a surprise. The W5 Gen 1 is still the best chipset available for Wear OS watches, and there's no successor yet. It handles health tracking, notifications, and app performance smoothly without excessive battery drain.

The battery clocks in at 646mAh, which is nearly identical to the Watch 3's 648mAh cell. That two-milliamp-hour difference is statistically meaningless. What matters is context: the OnePlus Watch 3 regularly delivered 3-4 days of battery life on a single charge, which made competitors like the Galaxy Watch and Pixel Watch (both struggling to last a full day with always-on displays) look embarrassing.

The display is a 1.5-inch LTPO AMOLED panel running at 466 x 466 resolution, housed in a 47mm case. Again, identical to the Watch 3. OnePlus is clearly following the 'if it ain't broke' school of product design.

How It Stacks Up Against the Competition

The smartwatch market in 2026 is essentially a three-way race between Samsung's Galaxy Watch 8, Google's Pixel Watch 4, and OnePlus's Watch lineup. Apple Watch dominates overall but lives in its own ecosystem, so the Android comparison is what matters here.

Samsung's Galaxy Watch 8 leads in AI-powered health features and software polish, but its battery life remains a weak point. The Pixel Watch 4 offers the tightest Google integration but suffers from a small battery and fragile-feeling design. The OnePlus Watch 3 carved out its niche by offering flagship-tier specs with battery life that neither Samsung nor Google could match.

The Watch 4 appears to be doubling down on that formula while adding durability as a differentiator. Currently, the only way to get IP69-level protection in a Samsung wearable is the Galaxy Watch Ultra, which costs significantly more. If OnePlus prices the Watch 4 competitively — and the company has a strong track record of aggressive pricing — it could be the best value proposition in the Android smartwatch space.

Key Takeaways

• The OnePlus Watch 4 has been spotted in EMVCo certification with a rumored IP69 durability rating
• IP69 certifies resistance to high-pressure, high-temperature water jets — far beyond the standard IP68
• Specs include the Snapdragon W5 Gen 1 chipset, 646mAh battery, and 1.5-inch LTPO AMOLED display
• The Watch 3 delivered 3-4 days of battery life, and the Watch 4 should match or exceed that
• No official announcement date yet, but certification filings suggest a launch is approaching

Our Take

OnePlus has quietly become one of the most interesting smartwatch makers in the Android ecosystem, and the Watch 4 looks like a continuation of the strategy that got them there: don't try to out-feature Samsung, just offer the things that actually matter at a better price. Multi-day battery life and serious durability are the two areas where most smartwatches still fall short, and those happen to be exactly where OnePlus is betting. The IP69 rating is partially a marketing play — nobody is actually pressure-washing their watch — but it signals engineering confidence in build quality. If OnePlus can survive pressure jets, they can definitely survive a rainstorm, a sweaty gym session, or getting knocked against a doorframe. Sometimes the best spec is the one that gives you peace of mind that you don't need a case for your $300 wrist computer.