17 Diatonic Keys C4-E6. Steel Keys. Resonating Box with Front and Back Sound Hole. Includes Protective Bag- Tuning Hammer & Key StickerDimensions: 110 x 135 x 185 x 30mm Weight: 300g. Perfect for beginners through to advanced players- this kalimba provides perfect tones. The wooden body combined with the dual sound holes provide captivating resonance and soft tones. A tuning hammer is provided so that notes can be gently knocked into place if they become out of tune. The kalimba can be easily stored away when not in use in the protective bag that is included.