https://www.cnbc.com/2018/01/05/amazon-alexa-is-coming-to-headphones-smart-watches-and-more.html >Amazon announced new tools on Friday that will allow gadget-makers to include the smart voice assistant in a whole array of new products. >Alexa is Amazon's smart voice assistant and it has slowly made its way from the Amazon Echo into third-party speakers, refrigerators and, soon, even microwaves. Now, with Amazon's Alexa Mobile Accessory Kit, device makers will be able to build Alexa into headphones, smart watches, fitness trackers and more.