Neodymium magnets enhance bass Durable Flexi-Grip makes a strong flexible connection 4 sizes of rubber caps for a precise and sung fit Surround sound design for a realistic and full sound effect 13.5mm speaker driver optimizes wearing comfort Surround yourself with music Feel the music with this 'reflected-speaker' patented design. A surround sound effect is created providing a hi-fi audio experience that immerses you in concert quality sounds. With 4 cap sizes to give you a precise and snug fit Brand Philips SKU PH804EL0LRH8WNAFAMZ-66530 Model SHE6000/98