IP68 vs. IP69K: What’s the difference?

When you’re shopping for a smartphone, headphones, or any other piece of consumer electronics, for that matter — it can take a few minutes to decipher how waterproof and dust-resistant a product is. Tech companies regularly drop IP ratings on their product pages, but they don’t necessarily explain their significance up front. Even us tech journalists frequently have to explore the fine print to see what kind of protection a device promises.