Spectrum have dropped MV teaser #1 for their 6-member comeback title track, "What Do I Do". 

In the MV teaser, member Eunjun seems lost and lonely in the dark, listening to music and shuffling through dance moves with a faraway look. Spectrum's full comeback since the late member Dongyoon's passing is less than a week away, coming up on November 4 at 6 PM KST. 

Make sure to keep an eye out for Spectrum's return!