Hicool K-9 Bluetooth Headphones Wireless Stereo Sport Sweatproof Earbubs with Mic Cool Magnetic Attraction: The magnet can attach the ends together like a stylish necklace, creating a fashionable sport lifestyle. The ergonomic design ensures comfortable and secure fit even during the sports, giving you more pleasant listening experience. Dual Battery Modules: The outstanding battery performance gives you endless enjoyment of listening to music, making phone calls and doing exercise. You can enjoy over 150 songs or 200 hours of standby with a full charge, offering you more listening with less charge, which both enrich your work and entertainment. Anti-perspiration Design: The ABS and PC material blocks your sweat trouble, effectively preventing the headphones from damaging. You can heartily asperses your sweat and paasion. Unlimited music, endless sport. Perfect Sound Quality: The high definition stereo noise cancellation reduces the loss of sound, eliminating the surrounding noise and solving the problems of play delay and staccato, making the bass deeper. The high fedility stero speakers endow music better sense of space, delivering you more vigorous and beautiful sound. Strong Compatibility: The powerful audio decoding system enables you to pair with All Kinds of Digital Products, no matter what brands, regardless of what systems. As long as you have bluetooth enabled devices, you could connect it easily and quickly.