Amazon.com: Made For Amazon, Battery Base in White, for Echo (4th generation). Not compatible with previous generations of Echo or Echo Dot (1st Gen, 2nd Gen, or 3rd Gen). : Everything Else
Best Buy: Amazon Echo Dot (4th Gen) Smart speaker with clock and Alexa Glacier White B07XJ8C8F7
Amazon.com: Universal Wall Mount for Echo Dot, HomePod Mini, Echo Dot 4th Gen, Echo 4th Gen, Dot 3rd Gen, Dot 2nd Gen, Echo, Echo Plus, Small Floating Shelf for Amazon Echo Space-Saving
Amazon Echo Dot (4th gen) review: The new Dot delivers a revamped look and (slightly) better sound | TechHive
Echo 4th Gen Smart Home Hub with Alexa | Twilight Blue | Amazon