Amazon launches two Alexa digital assistant-based gadgets

Amazon Inc on Thursday introduced two new gadgets similar to its voice-controlled Echo speaker, which can be used to check the weather, order Domino's pizza or hail an Uber car. Amazon Tap, a portable speaker that streams music, sells for $129.99. The $89.99 Echo Dot is a hockey puck-shaped device that responds to prompts to control smart appliances and connects to external speakers.