LightWave Saber Bass SL 5-String Fretted, UltraBlack Patented and exclusive LightWave Optical Pickup System uses infrared light to sense string vibration Extended bass response, wide dynamic range, long and natural sustain, extremely low noise Lightweight, ergonomic instrument design features solid alder body 34-Inch scale rock maple neck with rosewood fingerboard Powered by a rechargeable NiMH battery pack with rapid charge system