This Spirit Shadow Custom is a slighter larger build than the standard Shadow. At 17" it's still quite compact and great for traveling.  One incredibly unique feature is that the top shell is made from brass which produces a warmer tone with long resonation. While the bottom is stainless steel the two elements work togther to create a unique and soothing vibration. The top scale (leaf mandala) consists of C3, E3, G3, B3, C4, D4, E4, A4, B4, C5, D5 with double tongues. Bottom scale (snowflake design) consists of D4, E4, F#4, G4, A4, B4, D5,E5, F#5