Sound Everything sounds good with this. Active noise cancellation for full sound. Thanks to the customised processor, special algorithms and speakers matched to the headphones, Silent Seal active noise cancellation can reduce ambient noise to a minimum. Small headphones with great sound. The specially developed 11 mm speaker drivers provide a powerful yet differentiated sound. The 5-band EQ lets you customise the sound. Fine-tune with volume EQ. When you change the volume, the volume EQ adjusts the bass, midrange and treble for a balanced sound. An ear for your surroundings. Transparency mode keeps your ears open to ambient noise, so you can pay more attention to your surroundings when you're crossing the street, for example. Comfort Made for you. Inserts for all ears. The flexible ear inserts with mouldable design adapt to the shape of your ear and.