Hardware Changes. The
Amazon Echo Dot 2nd gen looks pretty much the same as the first
gen Echo Dot, featuring the same Puck-style design. ... Also, the new
Echo Dot is smaller, lighter and does not come with the 3.5mm cable, which was part of the original
Echo Dot package.
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Amazon Echo is a hands-free speaker you control with your voice. ... Amazon Echo also provides hands-free voice control to Pandora, Spotify, iHeartRadio, and TuneIn. Plus, Echo is Bluetooth-enabled so you can stream other popular music services like iTunes from your phone or tablet.