Best Buy: Amazon Echo Dot (4th Gen) Smart speaker with clock and Alexa Twilight Blue B085M66LH1
Amazon.com: Made for Amazon Battery Base, in Black for Echo Dot (4th generation) Not compatible with previous generations of Echo or Echo Dot (1st Gen, 2nd Gen, or 3rd Gen). : Everything
Amazon Echo (4th gen) review | Tom's Guide
Best Buy: Amazon Echo Dot (4th Gen) Smart speaker with clock and Alexa Glacier White B07XJ8C8F7
All-new Echo (4th Gen) | With premium sound, smart home hub, and Alexa | Charcoal