Amazon is celebrating Alexa's fourth birthday in typical Amazon fashion, and is offering some big discounts on a wide variety of products that utilize the assistant's services. From the Echo Dot to Anker's Roav Viva smart car charger, smart plug 2-packs, and even laptops with Alexa built-in, there's a bunch of great devices here at awesome prices. Beyond discounts on individual pieces of hardware, there are a few bundles that help you save even more that are worth checking out.

The second-gen Echo Dot is down to $30 each right now, but if you buy four of them at the same time you can get that price down to just $25 each, for a total of $100. You can grab the newer Echo Dot for $50 by itself, or pair it with a set of four Tile trackers for the same price, which is a $50 savings. If you buy two of the new Echo Dots you can save $20, and buying three of them ups the savings to $33.

Bundle the latest Echo Dot with a Harmony Hub to save $50, making your purchase only $100, or opt for the 2nd-gen Echo Dot and original Fire TV Stick for $70, which is $10 off.

Some of the other deals include a free Echo Input with purchase of Marshall's Woburn II Bluetooth speaker, B&O's Beoplay A1 Natural, or Anker's SoundCore Sport XL. Anker's Roav Viva smart car charger is down to $39.99, Acer's Alexa-enabled laptop drops from $900 to $760, and the First Alert Onelink Safe & Sound hits $199, a savings of $51.

There are a bunch of other great discounts available as well that are worth considering. Be sure to check out the whole sale and get your order in before it ends. If you have existing Amazon hardware laying around that you don't use and want to upgrade, Amazon has a great trade-in offer running that can score you up to 25% off the already-discounted new hardware, plus an Amazon Gift Card on top.

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