October Prime Day will be held on October 8 and 9 this year. October Prime Day is a members-only sale event run by Amazon in which the online retailer has thousands of sales on its site that are exclusively available to those with an active Prime members. October Prime Day will last two full days.

Amazon Prime Big Deal Days are mega-event sales during which Amazon slashes prices on tens of thousands of popular items. The sale lasts for just two days. Inventory on many products that go on sale is limited, so if you want to get the best deals, shop early to snag the items you want at a deep discount.

Reviewers call the Apple Watch Series 9 a "personal assistant," a "fitness tracker," and "a fashion statement all rolled into one."