The $399.99 Echo Show 21 is Amazon's largest smart display. With a 21-inch screen, it's almost 6 inches larger than the $299.99 Echo Show 15, but otherwise, the two are identical. It's essentially a ...

Amazon has launched a bigger Echo Show smart display with a 21-inch screen and refreshed the original Show 15. The new models come with improved audio quality and a better camera. You can buy the Echo ...