Amazon Echo Dot (RS03QR)

Overview
FCC ID: 2AHSE-2045 (2016-09-14)
 * Bluetooth 4.1 EDR/LE

Links of Interest

 * Amazon Echo on Wikipedia
 * Teardown on AllAboutCircuits (2 Gen)
 * Echo Dot Teardown on DigiKey (2Gen)
 * Teardown on EevBlog forums (PCB images)