So, you've decided to take the plunge into the world of wearables with Apple's first smartwatch, the Apple Watch.

It's an investment, right? The cheapest model, the Apple Watch Sport, starts at $499; the most opulent model in the Edition range, in 18 carat gold, is an ostentatious $24,000.

Not an easy fix: the Apple Watch. Credit:Bloomberg

Before you fork over your cash, you might want to think hard about what you're paying for.

Tech repair site iFixit is fond of doing "teardowns" of electronics products — in other words, ripping them apart with a pair of tweezers to see what's going on inside, offering a self-repair guide for tech-savvy readers.