The $120 Fire TV Cube might be the smartest Echo device Amazon has ever made — here's what it can do (AMZN)

Amazon Amazon's latest Alexa-enabled device has arrived — and it might just be the most useful one yet.

The Amazon Fire TV Cube is essentially a Fire TV and an Amazon Echo rolled into one.

It can power your home entertainment system on and off, switch inputs on your TV, play or pause the show you're watching, and, of course, handle basic Alexa questions like, "What's the weather going to be like tomorrow?"

In fact, Amazon expects the Fire TV Cube to be so powerful and capable, you'll rarely have to touch your TV remote.

The Fire TV Cube is priced at $120 and is available for preorder starting Thursday.

Here's everything it can do: