introduces new Echo Dot, new Echo Plus and Echo Sub

launches updated Echo Dot and Echo Plus in India, adds Echo Sub to list

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New Echo Dot, Echo Plus, Echo Sub launched in India: Price, specifications and features

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reveals flurry of new devices as tech giant aims to get Alexa inside homes and cars – GeekWire

Echo Sub Review: An Affordable Subwoofer for Compatible Echo Devices

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launches new Echo Dot, Echo Show and Echo Plus, and introduces Echo Sub for more bass

Echo (4th Gen) review - SoundGuys

launches new Echo Dot, Echo Show and Echo Plus, and introduces Echo Sub for more bass

Which Echo do I have?

Announces New 2018 Edition - Echo Dot, Echo Plus & Echo Sub in India.