SHRUTI BOX SURPETI 432 Hz SPECIALLY DESIGNED FOR BHAJAN KIRTAN YOGA. SOLID TEAK WOOD. 13 STOPPER. LONG SUSTAIN. CAREFUL, NOT 440 Hz C TO C' FULL RANGE SHRUTI BOX COMPACT 13 X 11 INCHES YET WITH GREAT LONG SUSTAIN REEDS SPECIALLY TUNED TO 432 Hz. PERFECT FOR KIRTAN REAL INDIAN SEASONED TEAK WOOD - SOLID, NOT LAMINATED