Ultra-thin Koa wood guitar. Koa has Sydow technique of carbon fiber infused to back of wood + cf bracing…making it not vulnerable to atmospheric conditions like regular wood guitars are; also enhancing sound. Black Guyker thumb lock tuners, gold frets, brass pins, Mi-Si pre-amp + LR Baggs p/u battery-free system, dual truss rod-sound hole accessed, Luminous inlays on fretboard side. 6