Samsung could be about to add a smartwatch to its Galaxy product line, a report suggests, according to Digital Spy.

SamMobile claims that a trio of new Galaxy products are in the works under the codenames of Project J, Project J Mini and Project J Active.

The flagship Samsung Galaxy S4 smartphone has previously been referred to as "Project J" by several sources, suggesting that Project J Mini is a smaller version of the Android device.

Project J Active has accessories including an arm band, bike mount and pouch listed, suggesting the product could be a piece of wearable technology.

The news follows reports that Apple has a large development team working on an iOS-powered watch with a curved display, giving rise to speculation that Samsung could challenge them on this front.

Samsung's Galaxy S4 has been tipped for release in May.