(Pocket-lint) - Although we don't yet know for sure what Samsung plans to unveil during its traditional Mobile World Congress Unpacked press event, the smart money is on a series of smartphones in the Galaxy S7 family.

It also seems that the company will be showing at least one new wearable device too. Leaked pictures have emerged of what is thought to be the Samsung SM-R150 activity tracker/sportswatch, also known as the "Triathlon".

That codeword is allegedly what it is being called in Samsung towers and possibly refers to multiple sports functionality.

From the pictures alone it is clear (if true) that the company is continuing down the same design route as the Gear S2. Indeed, bar an integrated strap, it could easily be mistaken for Samsung's latest smartwatch - twisting face dial, to boot.

READ: Best smartwatches to look forward to in 2016

The images were originally posted by Korean website Tizen Cafe, on its Twitter feed.

They show that the fitness tracker could come with a heart rate monitor - which is par for the course with Samsung - and, it is guessed, a way to track water intake throughout the day.

The pictures also show that the tracker will be removable and can be hooked to clothing instead of a watch band.

Little else is known, but we fully expect to hear more at the end of February as MWC gets underway.

Writing by Rik Henderson.