The SR Crossover is just that. It's a hybrid of a 6 string guitar and a bass guitar. It features 6 strings, with the tight string spacing you'd expect from an electric guitar, but utilizes thicker gauge strings and bass guitar electronics to gain a wider range of tones.
You play low strings, it sounds like a bass. You play high strings, it sounds like an electric hollow body. You can utilize this guitar to do traditional bass guitar parts and within the same song, without changing any options or knobs, you can do an electric guitar lead.
I do NOT recommend this bass for finger players. Pick only. The string spacing is way to tight to comfortably play with your 3 fingers.