![Apple Watch Series 11 [GPS 46mm] Smartwatch with Rose Gold Aluminum Case with Light...](https://i.shopsavvy.com/https://m.media-amazon.com/images/I/61Jbp0NvVQL._AC_UF480,480_SR480,480_.jpg)
The Apple Watch Series 11 is genuinely good at fitness tracking. Let me break down where it shines and where it's just okay.
Heart rate: Excellent This is where Apple really delivers. Studies show the watch is within about 4.5% accuracy on heart rate, and in real-world testing, it tracks within 1 beat per minute of a chest strap during steady exercise. Even during interval training with big heart rate swings, it keeps up. That's impressive for something on your wrist.
Step counting: Good Around 8% error, which is totally fine for daily activity tracking. No fitness tracker is perfect here—they all have some variance.
Calorie estimates: Take with a grain of salt About 28% error. This is actually normal across ALL fitness wearables, not just Apple Watch. Don't obsess over exact numbers. Use it as a general guide.
GPS: Surprisingly solid Here's something interesting: the Series 11 uses single-band GPS while some competitors have dual-band. On paper, dual-band sounds better. In practice? Apple's single-band implementation often beats the competition. Your run routes will be accurate.
Sleep tracking: Decent for basics It detects deep sleep correctly about 62% of the time and tends to underestimate it. The new sleep score gives you a simple 0-100 rating based on how long you slept, how consistent your bedtime was, and how often you woke up. It's useful for noticing patterns, but if you're serious about sleep optimization, dedicated devices go deeper.
One complaint worth mentioning The redesigned workout app in watchOS 26 has annoyed some users. Touch targets are smaller, and swimmers especially struggle to start workouts once they're wet. Apple may fix this in updates.
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