Features:- Perfect for any music beginner or harmonica lover.- Adopt stainless steel screw, not rust.- Stainless Steel material, can stand wear and tear, very durable.- Adopt green resin material, the color is transparent and bright, good waterproof.- Open design on the back, louder.- Small volume, easy to carry.Model Name: SW28-2Holes: 28Specification: EchoPronunciation Method: TremoloBox Material: PaperColor: SilverProduct Length: 17.8cmProduct Weight: 85gPackage Weight : 130 G / 4.59 OuncesPackage Dimensions (L*W*H) : 185*40*34 MM / 7.28*1.57*1.34 InchesRetail Packaging: No, No PackingPackage Include:1 x Harmonica1 x Carrying Case1 x Instruction