Best Buy is making hundreds of the deals from its Black Friday ad available through Sunday, including Apple doorbusters such as saving up to $300 on an Apple Watch Series 4.

Then, Best Buy will unveil a "Daily Doorbuster" every day between Monday and Nov. 20 in which a new deal from the ad will be released. Customers who want the reminder can sign up for a daily text alert on Bestbuy.com.

The concept is similar to its 20 days of deals promotion it has conducted the past couple of years in December, seeking to keep people coming back to its website every day in the final stretch of the holidays by revealing a new deal each day.

In recent weeks, most big-box chains have announced early Black Friday sales giving consumers access to some of the deals from their Black Friday ad. While forecasts are calling for a decent holiday-shopping season this year, retailers are still trying to get to consumers' wallets early to make sure they get their piece of the pie, particularly since there is a bit of uncertainty around tariffs.

Target is launching its Black Friday preview sale on Friday and Saturday, expanding the number of items and extending it to two days, from one day last year. Walmart and Kohl's have already held theirs but are dangling other sales between now and Thanksgiving. In a new twist this year, Kohl's on Thursday started revealing daily deals that will continue over nearly 20 days in November and December.

Best Buy, which released its full Black Friday ad Thursday, is saving some deals for Thanksgiving Day, when it will open at 5 p.m., as it has the last several years.