- Some of Amazon's Alexa-enabled speakers are out of stock, and customers are being warned that they might not arrive until after Christmas.
- The out-of-stock items include the second-generation Echo Show and the third generation of Amazon's popular Echo Dot .
- The third-generation Echo Dot was the No. 1 bestselling product on Amazon across all manufacturers and categories worldwide on Black Friday and Cyber Monday.
If you're ordering an Amazon Echo speaker for a Christmas gift this week, make sure you read the small print.