Google's watch project isn't hardware at all, but an extension of Android for wearables. It's called Android Wear. Google unveiled the project today in a blog post, describing it as a way to bring Android to wearables, starting with smart watches that will be released later this year. Two concept videos (embedded below) show how Google envisions users will interact with Android Wear devices, though it's unclear if these devices will have to be tethered to Android phones, or will offer functionality that you can't get from a smartphone. From Google's descriptions, it looks like Android Wear devices will tap into Google Now, as well as voice search and commands, a la Moto X's passive listening ability. Motorola and LG have both announced Android Wear watches, and other partners on board include Samsung, HTC, and Asus. Developers can sign up for a preview now.