Crusher Wireless delivers deeply immersive, dual-channel haptic bass. And with up to 40 hrs of battery life, you can enjoy days of Bluetooth listening before needing to plug in. Stereo haptic bass is bass you can feel that is transmitted to each side of the headphone for true, left and right variable bass. By providing this physical sensation of sound, the headphones provide a user experience that creates a sense of immersion in a way no other headphone does. Crusher wireless feature stereo immersion drivers. This means the left driver reproduces a left signal and the right driver reproduces a right signal. Stereo immersion tech is a multi-directional (left/right) immersion. Adjustable Sensory Bass.