A smartwatch can cost hundreds of dollars and still reach the end of major software updates while the hardware works perfectly well.

Several Apple, Google, and Samsung watches are approaching the end of their guaranteed software-update periods this year, giving owners a clear look at how quickly wearable hardware can fall behind even while it remains physically usable.

The deadlines do not all mean the same thing. Some watches are losing compatibility with the newest operating system, while others are reaching the end of guaranteed OS updates even though security fixes may continue.

Apple’s watchOS 27 leaves the Series 6, Series 7, Series 8…

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