https://techcrunch.com/2018/12/26/amazon-announces-a-record-breaking-holiday-tens-of-millions-of-new-prime-subscribers/

Amazon had another record-breaking holiday season, the retailer announced this morning. The company says it added “tens of millions” of people who signed up for Prime memberships, both paid and on a trial basis. Its worldwide customers also shopped and ordered more items than ever before, including “millions more Amazon devices” compared with this time last year. The device best-sellers, as on Black Friday, again included Amazon Echo speakers and Fire TV.

Specifically, Amazon said its top devices sold over the holidays were the Echo Dot, Fire TV Stick 4K and the Echo.