How much does it actually cost to feel safe pushing your limits outdoors, whether that means a trail run at altitude, an open-water swim, or a mountain hike with no phone signal to speak of?
That question gets a lot more interesting when a watch built to answer it drops to £649 from £749, and the Apple Watch Ultra 3 is exactly that watch, carrying a titanium case, sapphire crystal display, and water resistance to 100 metres as standard.
You can save £100 on the Apple Watch Ultra 3 with GPS and cellular, now at its best price in a month. It’s a popular deal, so don’t wait too long
A saving of £100 on a watch as good as the Apple Watch Ultra 3 is a rare deal that will tempt anyone looking to track their fitness.
Dual-frequency GPS is the navigational backbone here, giving you precise location tracking even in environments where single-band GPS tends to drift, and that precision feeds directly into the running power metrics, pace zones, and training load data that serious athletes actually train from.
Battery life sits at up to 42 hours under normal use, which means you can wear it through a full day, a night of sleep tracking, and well into the following day before you need to think about charging it.
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The satellite communications capability operates independently of your phone and carrier network, letting you send an emergency SOS message from genuinely remote locations where cellular coverage simply does not reach, which is a meaningful distinction when conditions change quickly.
Health monitoring covers heart rhythm irregularities, blood oxygen readings, possible hypertension alerts, and sleep scoring through the Vitals app, building a picture of recovery and readiness that goes well beyond step counting and calorie estimates.
The customisable Action button gives you instant physical access to whatever function matters most in the moment, whether that is starting a workout, triggering the torch, or marking a waypoint on a trail map mid-stride.
A saving of £100 on the Apple Watch Ultra 3 is a rare enough event that it tends not to last, and if you want to see how it sits against the rest of the lineup before spending £649, our guide to the best Apple Watch in 2025 is worth a look first.
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