39-Key 3-Octave Shruti Box Drum (C to C) — 440 Hz Professional Drone Instrument for Classical Music, Yoga, Meditation & Sound Therapy

Professional Grade Shruti Box — 39 Keys, Full 3-Octave C-to-C Range, 440 Hz Tuning for Musicians & Healing Practitioners

3-Octave 39-Key Shruti Box Drone Instrument — 440 Hz Tuning for Kirtan, Raga Practice, Yoga & Sound Healing

C-to-C Full Range Shruti Box Drum — Professional 39-Key Drone Instrument for Music Performance & Therapeutic Sound Work