|Panasonic Deep Bass Wireless Headphones from JD WilliamsWireless Headphones M300B capitalise on heavy bass sound for you to enjoy music to the fullest. M300B features XBS DEEP that delivers well-defined deep bass and also has Bass Enhancer to further emphasize bass when you want. Side Pressure Dispersion Technology means that our headphones fit snuggly around the ear for a comfortable fit all day long. Apply an equalizer for stronger bass with the touch of a button. This Bass Enhancer clarifies the bass for even more powerful sound, expanding the range of music you can enjoy. M Series headphones are designed for comfortable, long-term wear, enabled by Side Pressure Dispersion Technology, which ergonomically adjusts the lateral pressure balance between the headband and ear pads.