Amazon will spread offers over 30 hours for its third annual Prime Day next month as it adds China and India to the ecommerce event.

The online giant is also extending the annual online shopping festival to Mexico, taking the total number of countries participating in Prime Day to 13.

Prime members will be able to snap up exclusive bargains for 30 hours starting at 6pm UK time on July 10 and running for the entirety of July 11.

New offers will be added as regularly as every five minutes during the online event, which posted a 160% surge in order numbers year-on-year in 2016 and was heralded by the etailer as its “biggest day ever”.

Shoppers have until July 3 to sign up for a Prime membership to access discounts on the day, and the online giant has cut the cost of the membership by £20 to bolster numbers.

Amazon has also added functionality to its app to drive sales on the day, including allowing shoppers to track the price of a particular product.

Amazon and Dixons Carphone both experienced a surge in online traffic during the annual shopping event last year – and with a third of UK shoppers now signed up to the online retailer’s membership scheme, the event is likely to drive more sales this year.

Vice president of Amazon Prime Greg Geeley said: “Our members love Prime Day and we were thrilled by the response over the last two years. It is inspiring us to make it even better this year for Prime members.

“Every side of our business is working to deliver more deals for a record number of shoppers.”