With the rise of Hawaiian music in the late 1910s, Martin began making ukuleles. The line expanded from mahogany to more elaborate Hawaiian koa models. A soprano-sized model, the 5K Uke is the ukulele equivalent of a Style 45 guitar – the top of the line. The 5K Uke is crafted with solid highly-flamed Hawaiian koa top, back and sides finished in a polished gloss, and trimmed with abalone pearl appointments. High quality, beautiful tone and ease of playability make the 5K Uke a joy to own. Specs: Make: Martin Model: 5k Soprano Ukulele Body Size: Soprano Construction: Dovetail Neck Joint Bracing: Soprano Ukulele, Sitka Spruce Top Wood: Koa Back and Side Wood: Koa Finish: Gloss Scale Length: 13.614” Nut Width: 1 13/32” Neck Shape: Soprano Ukulele Neck Taper: Standard Taper Binding: Grained Ivoroid Top Inlay: Abalone with Multi Stripe Pickguard: None Rosette: Abalone with Multi Stripe Bridge: Soprano Ukulele, Koa Saddle: Bone Bridge Pins: None Back Strip: None Neck Wood: Mahogany Neck Finish: Gloss Fingerboard: Ebony Frets: 17 Fingerboard Inlay: 5k Design, Abalone Fingerboard Binding: Grained Ivoroid Tuning Machines: Gold Ukulele Nut Material: Bone Case: Molded Hardshell