Samsung’s Galaxy Watch Ultra 2 just leaked two days before it was supposed to launch — and the headline change is one Samsung has never made in this line before. Leaker Evan Blass posted what looks like an internal Samsung marketing render on July 20, showing the Ultra 2’s battery jumping from 590mAh to 800mAh, a 36% increase, just ahead of the July 22 Unpacked event where Samsung is expected to confirm it.
What Actually Leaked
The battery number is the one nearly every outlet agrees on — 9to5Google, SamMobile, Android Authority, and GadgetHacks all independently cite 800mAh, though one source lists 784mAh instead. Treat 800mAh as the number to watch, with a small asterisk until Samsung says it on stage.
The rest of the leak reads like a genuine spec sheet rather than guesswork. A Snapdragon Wear Elite chip replaces Exynos for the first time in a Galaxy Watch — a real platform switch, not a rebrand. The case is reportedly titanium and 12% thinner than the current model. The display is said to hit 5,000 nits, up from 3,000, and the water/dust rating climbs to IP69K from IP68. Wi-Fi 6, Bluetooth 6.0, ultra-wideband, and satellite connectivity (NB-NTN) round out the leaked sheet.

Why This Particular Leak Stings
Context matters here. The 2025 Ultra refresh was widely panned as skippable — PhoneArena went as far as saying it “struggled to find a strong argument in favor of its release,” largely because it kept the exact same 590mAh battery and Exynos W1000 chip as the original 2024 model. Buyers who sat that generation out because of tepid battery life are the exact audience this leak is aimed at. If the 800mAh figure holds, it’s the first meaningful battery upgrade the Ultra line has seen since it launched.
One more leaked detail is worth flagging even though it’s the least confirmed: some sources tie the Snapdragon Wear Elite chip to on-device AI capable of running a roughly 2-billion-parameter model at around 10 tokens per second, directly on the wrist. If that number is even close to accurate, it would be the first dedicated AI silicon Samsung has put in a watch — but it comes from a single secondary source, so file it under “interesting if true” rather than fact.
How It Stacks Up Against the Competition
An 800mAh cell doesn’t sound dramatic until you put it next to what else is on wrists right now. Apple’s Watch Ultra 2 ships with a 564mAh battery and leans on software efficiency to get through a day and a half; Samsung’s own current Ultra needed 590mAh to do roughly the same job, thanks to a brighter always-on display and always-active GPS. Jumping to 800mAh without a battery-life regression would be a genuine gap-closer against Apple, not just an internal upgrade over last year’s model.
It also matters against Google’s Pixel Watch line, which has leaned on smaller batteries and more aggressive power-saving modes rather than raw capacity. If Samsung can pair 800mAh with the efficiency gains Snapdragon Wear Elite is supposed to bring over Exynos, the Ultra 2 could end up the longest-lasting flagship smartwatch on the market — assuming, again, that Samsung confirms the number as-is.
What’s Confirmed vs. Still Rumored
Confirmed: Samsung’s Unpacked event is happening July 22, 2026 — two days from this leak — and is expected to include the Galaxy Watch 9 alongside the Ultra 2, plus the rumored Galaxy Z Fold 8 and Flip 8. Everything about the watch itself, including every spec above, remains leaked rather than official until Samsung says otherwise on stage.
Pricing is also still a rumor: the Watch Ultra 2 LTE is pegged at roughly €749 (about $857), with the standard Watch 9 expected to start around €409 (about $468). Those numbers line up with past Ultra pricing, so they’re plausible, but not locked in.
What’s Next
Samsung will either confirm or contradict every number above in roughly 48 hours. If you want a full rundown of how to actually watch the event live, we put together a quick guide on how to watch Samsung’s Galaxy Unpacked with the stream link and start time. And if an $857 watch feels steep no matter what’s inside it, our roundup of the best budget smartwatches under $100 is worth a look before you commit either way.
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