Black Friday deals have officially begun rolling out, and Amazon's got several nice sales that you should know about.

First up, SanDisk memory products are on sale. The SanDisk 400GB microSD card is at an all-time low price, but if you're looking for something a bit cheaper, you can score also score a 256GB card or a 200GB card. Amazon also has a SanDisk 128GB microSD card on sale.

These microSD cards are useful in many different devices. Obviously they work well for adding a bunch more storage to your smartphone or tablet, but you can also use them to gain more space for digital games on the Nintendo Switch.

Also on sale are Amazon Echo devices. The brand new Amazon Echo Dot (3rd Gen) can be had at a discount, while the standard Amazon Echo (2nd Gen) and the Echo Plus are both on sale as well. The new Echo Show with a 10.1-inch display getting a price cut, too.

If you're interested in a new tablet, you can snag an Amazon Fire 7, a Fire HD 8, or a Fire HD 10. You can even score a nice deal on a new smart TV, as Amazon's got the Toshiba 32-inch 720p HD Smart TV - Fire Edition and the Toshiba 50-inch 4K Ultra HD Smart TV - Fire TV Edition on sale.

These are all limited time deals, so you should act fast if you're interested. You can get a closer look at the SanDisk microSD sales here and the discounted Amazon devices here.