Panasonic RQSW99V Brain Shaker Extreme Portable Stereo (Silver/Blue) ShockWave Metal design has a durable aluminum body with side rubber protector and twist lock system Includes Brain Shaker Extreme headphones with remote control S-XBS Extra Bass System gives a deep bass boost Built-in hook for strap, carrying case included Provides up to 28-hour playback with just 1 AA battery