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Amazon.com: Made For Amazon, Battery Base in Black, for Echo (4th generation). Not compatible with previous generations of Echo or Echo Dot (1st Gen, 2nd Gen, or 3rd Gen). : Everything Else
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Amazon Echo Dot with Clock review: The display—limited as it is—justifies the $10 upcharge | TechHive
Amazon's new Echo dot devices come with built-in temperature sensors, and you can pre-order them now
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