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Echo (4th generation) | Premium sound Wi-Fi and Bluetooth smart speaker with Dolby, smart home hub and Alexa | Twilight Blue : Amazon.co.uk: Amazon Devices & Accessories
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Amazon Echo Dot (4th gen) review: The new Dot delivers a revamped look and (slightly) better sound | TechHive
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Echo (4th generation) | Premium sound Wi-Fi and Bluetooth smart speaker with Dolby, smart home hub and Alexa
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