The D'Luca Primo Button Accordion 31 Keys with 12 Bass on GCF Key with Case and Straps is a 3 Row Diatonic Accordion with 31 treble buttons and 12 bass buttons. Play your favorite Nortenas, Tex-Mex, Vallenato, Cumbia, and Conjunto songs! The D'Luca Primo Features Italian style decorations with pearlescent colors, 18-Fold diamond design bellows for bigger sound with steel corners for added protection. Beautiful custom Grill acoustically designed to provide a bigger sound than most other comparable accordions. A slide lever air valve makes for faster air intake. Upgraded button design for smooth operation. The D’Luca Primo also includes an adjustable left hand strap, double straps hooks on each side of the accordion and two bellow straps. Each D'Luca Primo Accordion includes a premium hard case and adjustable PU Leather shoulder accordion straps. Accordion Dimensions: 12.5 Inches Length, 13 Inches Height and 8 Inches Width. Accordion Weight: 11 lbs. approximately.