Results matter, and when you have the perfect headphones there’s nothing standing in-between you and your workout. With their Flip Hook design, they adapt to an in-ear or behind-the-ear fit for added convenience. A comfortable combination of Flex Soft ear tips and Twist Lock technology means these buds are guaranteed never to hurt or fall out. And if you thought a little sweat or rain was going to ruin your run, think again. Thanks to IPX5 sweat proofing, JBL Endurance RUN headphones keep up with your every step, while an in-line microphone and remote ensures you’re never reaching into your pocket to answer calls. Dynamic frequency response range(Hz): 20Hz – 20kHz For any product related query, service and warranty Customer Care no: 1800-102-0525 or share your query on https://support.jbl.com/in/en/customer-service/service-centres.html?basketContents=&basketUrl=https://in.jbl.com/cart