Answer 2: Enamel is the hard material that coats your teeth, and is made mostly of a mineral. However, we call other things enamel. There's enamel paint, which is totally different, and there's also porcelain enamel, which is used to make a lot of dishes.
All of this is due to Amazon's unique approach with the Echo. It's not a portable speaker like we've seen from Jambox and Logitech. Instead, it's a rather large, cylindrical device that needs to be plugged into power. It's something you'll likely just leave in a single spot in your home.
(Read the full preview.) The original, more expensive Echo can fill a room with sound. The Dot features much of the same functionality as the Echo, just with a less powerful speaker and a line-out plug on the back. In April, also Amazon introduced the $130 Echo Tap.