Hohner Echo TREMOLO 2409/40 hole Hohner Echo tremolo harmonica, C key, double reed (diatonic arrangement), each note has two reeds attached with a slight pitch difference, and this offset creates a beautiful tremolo effect. There are no dents, but please note that there are some minor scratches. - Brand: Hohner - Model: Echo - Type: Tremolo - Key: C - Case: Red case