If you're an Amazon Prime member, the US shopping giant is poised to launch a four-day bargain-a-thon that's only available to you and other paid subscribers. Known as , Amazon has extended this annual sale to 96 hours, with the price cuts running .

That makes this the longest Prime Day sale in the history of the members-only event. Prime members will have twice as much time to browse the sale. Amazon is promising "hundreds of thousands of deals" across all of its major categories, with discounts on much-loved brands like , and .

Amazon Prime membership in the UK offers free one-day delivery, Prime Video, Prime Music, unlimited cloud storage for photos, and a handful of other perks. New users can enjoy a 30-day free trial. Membership is required to unlock access to the annual Prime Day sale, which features major discounts across "hundreds of thousands" or products in all categories on Amazon

The sale starts at and will end . However, not all of the price cuts will be available for the entire 96 hours. Amazon will withdraw some promotions if stock is running low.

Amazon has started to tease some of the products and brands that'll be featured in its longest-ever Prime Day sale

The online superstore is introducing a new curated list called that'll feature a new bundle of products exclusive for Prime members, including a limited-time deal price crash on a specific products that'll launch at midnight every day during the Prime Day sales.

Without Prime membership, you'll be stuck paying the full RRP for items that've been discounted in the sale. You'll also lose out on next-day delivery at no extra cost on thousands of items.

But becoming an Amazon Prime member doesn't have to cost you anything.

That's because the US shopping giant offers . Sign up, then cancel immediately and you'll still be able to enjoy all of the perks of Prime membership for a month.

That includes access to all discounts in the Prime Day sale, exclusive boxsets and films to stream via Prime Video, unlimited cloud storage for photos in Amazon Photos, free video games to download to your PC, next-day delivery on thousands of items, , and more.

If you've already tested-out Amazon Prime membership with , it's worth checking whether . Amazon regularly offers a trial period to all customers every year or so, even if you've taken out a 30-day trial for previous Prime Day sales, you might be able to sign-up again.

If you're excited about the prospect of a site-wide Amazon sale, you can start preparing for the deals now. Amazon has shared several ways that Prime members can make the most of the 96-hour event