NCT U's Jaehyun, Doyoung, and Taeil have released their teaser images for their upcoming release.

The trio will be releasing "Timeless...", which is an emotional ballad song that dreams of reuniting with a loved one. The song was actually revealed through 'S.M. ROOKIES SHOW' before NCT's debut, and once again through 'NCT.zip'.

NCT U's next 'SM Station 2' single will be out January 12 at 6PM KST!