SoundBuds Sport NB10 Earbuds That Hold Fast When You're At Your Limit From ANKER, the Choice of 20 Million+ Happy Users - Industry Leading Technology - Worry-Free Warranty - 99% Positive Amazon Feedback Ultra-Fit Flexible over-ear hooking design, ergonomic EarTips, and adjustable FitClip ensure a customized, comfortable and secure in-ear fit; robust enough to withstand the most intense workouts. Water-Resistant Built for your active lifestyle.The IPX5 water-resistant shell and internal nano-coating provide a double layer of water protection so you can run in heavy rain or sweat it out in the gym. Powerful Sound Oversized 12mm drivers deliver crystal-clear sound to boost your performance. Noise isolation ensures that you stay in the zone. Extensive Connectivity Bluetooth 4.1 provides rapid pairing and stable connection up to 33 ft, while the built-in mic enables hands-free calling. Place your phone out of the way and get an unrestricted, lighter workout. iPhone 7 Ready Bluetooth 4.1 ensures effortless, stable pairing with your device straight out-of-the-box. NB10s are the perfect, wireless accompaniment for your iPhone 7 (or any other Bluetooth enabled device). Say goodbye to the headphone jack. Worry-Free Warranty At Anker, we believe in our products. That's why we back them all with an 18-month warranty and provide friendly, easy-to-reach support.