Amazon unveils a slew of new devices, including revamped Echo Dot, Alexa-powered microwave and more

Amazon is taking the wraps off of a slew of new devices. During a pop-up event at its Seattle headquarters, the tech giant unveiled a brand new version of its Echo Dot, which features big boosts to its sound quality - broadcasting sounds at 70 percent louder volumes. The revamped Echo Dot, which the firm said is it's best-selling speaker ever, is expected to begin shipping next month and costs the same as prior versions at $49.99. Amazon also revealed an Alexa-powered microwave, which lets users heat up their food hands-free. The microwave is priced at $60 and will start shipping later this year. Buyers must already own an Alexa-equipped speaker to take advantage of voice commands.