Whitelabel K100 Bluetooth V4.1 Headphones, Wireless Sweatproof Headset in-Ear Noise Cancelling Sports Running Earbuds with Mic for iPhone 6s Plus Samsung Galaxy S6/Edge and Android(Blue) SWEAT IN STYLE: The winner in sports audio features innovative sweat proof covering and flexible ear hooks that stay in place no matter the physical activity TOP QUALITY AUDIO: Hear richer and more natural sound from your smartphones, tablets, and audio devices BLUETOOTH 4.1: The Latest Bluetooth 4.1 technology offers a faster, more energy efficient connection so you can listen to music for up to 4 hours. CRYSTAL CLEAR COMMUNICATION: Featuring CVC Noise Cancellation technology, the integrated microphone lets you chat without external noise or other interference ABSOLUTE WIRELESS STABILITY: Built-in ceramic antenna provides enhanced audio quality and more stable Bluetooth pairing, meaning minimal lost connections