The Echo Show 21 looks just like the Echo Show 15, just bigger. It measures 13.2 by 21.4 by 1.5 inches (HWD). A 1.8-inch white mat and 0.4-inch flat black frame surround the 21-inch screen. The design ...

We've spent the past 12 months testing and reviewing hundreds of hardware and software products across 18 key technology ...