The members of Spectrum have wrapped up individual teaser videos with Donggyu and Minjae. 

The group's first ever comeback since the passing of late member Dongyoon will be just after this weekend, on November 4 at 8 PM KST. The title track from Spectrum's 2nd mini album 'Timeless Moment' is "What Do I Do", hinting at Spectrum's mature, dramatic transformation. 

Watch Donggyu and Minjae's teasers above and below.