Compared to the average smoke detector, the Nest Protect seems like an extravagance. It's more than double the price of a garden-variety device and although it's pretty, it's also something you'll rarely look at. But, when you're thinking about safety, it's a little easier to justify the added cost, especially since the Protect is rated for 10 years of use, is more sensitive to dangerous elements while reducing false alarms and gives you gentle warnings before a situation really becomes unsafe. Many of the Protect's smart features carried over from the previous version, and that's great, but it's the internal safety upgrades that ultimately keep you safe. The Protect may look cool on the outside, but like we've learned from every after-school special, it's what's inside that counts.