【PPS 8 Exclusive Acoustics Technology】Experience deep and powerful, yet well balanced music with the Bluedio exclusive and innovative 8 driver technology. Each frequency is accurately reproduced for a captivating listening experience. 【3D Surround Effect】 Dramatically enhancing your music doesn't have to be complicated. Simply turn on the 3D surround effect, you'll experience something entirely new-a virtual 360° surround sound from the built-in 3D DSP processor, as if in a concert hall. 【24-bit High Fidelity】Optimized for high-fidelity sound, the high-resolution Bluetooth decoder achieves a remarkable new level of speed: up to 24-bit signal processing. It helps reproduce abundant details, let you hear new details and nuances even in your most-played favorites.