The E double harmonic (Bhairav) scale has 7 notes: E – F – G♯ – A – B – C – D♯. The double harmonic major has a ♭2 and a ♭6 around a major 3rd and major 7th: two gaps of three frets. In India it is Bhairav thaat, the morning raga scale; elsewhere it is called the Arabic or Byzantine scale.
Compared with the E major scale it has ♭2 (F instead of F♯), ♭6 (C instead of C♯).
The explorer above is set to E double harmonic (Bhairav): the whole neck is mapped, and you can zoom into any of its 7 positions, change the labels to degrees or fingers, and hear it up, down and in patterns.