Do not buy this device, if it worked, all it does is re-direct the Alexa Ghost skill response to this “speaker” so not only does it have to be in the same room as the Echo or you have to have an Alexa remote you also get a worse output as the speakers in the Echo devices (all of them) are far superior.
https://www.amazon.com/Limited-Destiny-Ghost-not-machine-specific/dp/B077J92PYC