50 hours, Ultra-long Wireless Playback
High Capacity Rechargeable Battery
Powerful, Robust Bass
40 mm Driver Unit, Extra Bass System (XBS)
Comfortable Fit Over the Ears
Over-Ear Style Allows You to...
RB-M300B Deep Bass Wireless Bluetooth Immersive Headphones with XBS DEEP and Bass Augmentation (Black / Sand Beige)
How deep? XBS DEEP.
Panasonic's new XBS DEEP (Extra Bass System Deep) technology...