Attention, shoppers! Amazon Prime Day 2019 starts on Monday, July 15 — and we're counting down the days until the retailer’s biggest event of the year. We’re anticipating serious discounts on Amazon Devices like the Kindle, Fire, and Echo, plus popular kitchen gadgets (Instant Pot, anyone?) and smart home devices from beloved brands like Roomba and Dyson. You can also expect to see tons of sales on big-ticket items, from mattresses marked way down to Nintendo Switch and 4K TV deals for all your gaming needs. One caveat: The very best Prime Day deals sell out fast, so make sure to "add to cart" quickly or you just might miss out.