The C-sharp power chord (abbreviated "C#5 chord") is a two-note chord consisting of the notes C♯ and G♯. The chord is formed by removing the major third from a C-sharp major chord.
C-sharp power chord
C-sharp fifth chord
C♯omit3 C♯(omit3) C♯no3 C♯(no3)
Dyad (two-note chord)