Question: what is the difference between the echo dot 2 and echo dot 3?
Answer: The first, most obvious difference is the look. The Echo Dot 3 features a more rounded shape and a fabric-bound speaker that wraps the body of the device, ousting the smooth plastic look of the Echo Dot 2. ... The Echo Dot 3 also does away with the Micro-USB power port and relies on a direct power port instead.