The Swar Sudha is 3 in 1 Electronic Music Instrument that Delivers a Genuine Sruthi Drone. A Carnatic Instrument to aid the Musician is the Sruti Petti; & Swar Sudha is the Electronic Version of the same. This Electronic Shruti Box with its Genuine Shruti Tone & an Accurate Pitch range in excess of an Octave doubles in as a Tuner when required. It also has an inbuilt Metronome. It's ABS Plastic Body, Fine Tuning along with is Auto Memory and Main / Batteries Operation, makes it an Exciting Indian Musical Instrument. A very nice padded gig bag is also included.