Dale Smith is a former Associate Writer on the How-To team at CNET. Echo Loop raises a host of questions about what it does, who it's for, whether you can customize it and even how to buy it -- it's ...

In what quickly became a tsunami of hardware announcements at its 25 September event, Amazon has surprised everyone with the Echo Loop – an Alexa-powered smart ring wearable. The 2.5mm thick piece of ...