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Manufacturer battery figures are usually measured under ideal conditions (moderate volume, no ANC). Real-world use with noise cancellation, calls or higher volume typically reduces runtime, so treat published numbers as a best-case reference rather than a guarantee.

ANC is most useful for frequent flyers, commuters or anyone in consistently noisy places. If you mostly listen at home or in quiet offices, a well-sealed passive fit may be enough — and can mean lower cost and longer battery life.

Most in-ear designs rely on a proper seal to deliver accurate bass and block outside noise. A loose or wrong-size tip can make even a great pair sound thin, so trying multiple ear-tip sizes is worth the few extra minutes.

Higher-quality codecs can improve wireless fidelity, but only if both your source and the earbuds support the same codec — and only if your ears and gear can tell. For casual listening it's secondary to fit and comfort.

An IP rating gives peace of mind for sweat or light rain, but it's not a licence to soak them. Ratings vary in what they test, so avoid submerging earbuds even when a resistance rating is listed.

Look at the seller's return window and warranty. Comfort and sound preference are personal and hard to judge from specs alone, so being able to return a pair that doesn't fit is often worth more than a small feature difference.