JBL C300SI On-Ear Dynamic Wired Headphones (Black) Experience a completely immersive and engrossing listening experience with the JBL - CS300SI Headphones. The headphones provide exquisite sound quality and deep bass for an immersive listening experience. The high power magnetic drivers offer clear, detailed sound reproduction. The headphones feature self-adjustable ear-cups made from premium quality materials. They offer a perfect fit and optimal comfort. They are lightweight making them apt for travel. High Power drivers deliver JBL Sound with bass you can feel. For queries/assistance please contact the brand support no.:1800 102 0525.