The 50mm driver and dual extreme bass ports deliver ultimate bass that will move you to any musical style rugged and durable yet comfortable with a high output design for xtreme performance 1 button remote amp mic for iphoneandroidblackberry in line 1 button remote amp mic for iphoneandroidblackberry quotdual extreme bass portsquot and 50mm neodymium driver units deliver ultimate bass sound robust body with anti impact quottough protectorsquot soft padded headband with earpads provid