Amazon Echo Dot (4th Gen) - Charcoal in the Smart Speakers & Displays department at Lowes.com
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
Echo Dot 5th Gen Vs 4th Gen - Should You Upgrade? - YouTube
Amazon Echo Dot (4th Gen) - Smart Speaker With Clock And Alexa - Twilight Blue : Target