Bring Music Where You Sweat Thanks to the IPX7 sweat proof rating, Vipcall sports earbuds keeps the headphones protected and in peak condition whether you?re getting drenched in sweat after a grueling workout. True High Definition Sound Drawing on extensive research and development, Vipcall headphones features stereo sound with high definition and unparalleled rock-solid bass. Let your favorite songs drive you forward. Always Stay Comfortable Ergonomic and shallow in-ear design, soft silicone ear hooks, and memory foam ear tips brings secure fit without hurting your ear, enables comfortable wearing experience. Portable Gym-ready Carrying Pouch & Cord clip Come with an EVA bag with cushioned interior which allows you to store your earbuds safely and prevent the scratches in your training routine. The cord clip can shorten the wire to fit your back neck or head, because the long wire may bother your move and cause stethoscope effect. *Note: (1) Please keep your headphone charged when in low battery life to achieve better Bluetooth connection and protect your battery. (2) Please choose suitable ear tips and wear your headphone tightly when you are running or cycling, it will help you reduce the annoying wind noise. (3) Covering the excess thread with the shirt will avoid cables bouncing of the neck during intense running. *Accessories' use: (1) You can tighten the earphone cable buckle to avoiding extra thread from bouncing around. (2) You will experience more comfortable by pinching the earplugs and lifting the ears up before wearing memory-foam ear tips.