InzhiRui Bluetooth Headphones Wireless Bluetooth Headset Sport Stereo in-Ear Noise Cancelling Sweatproof Running Earbuds with Mic for iPhone 6s Samsung S6 and Android Wireless Bluetooth Technologies connects wirelessly to your device, allowing you to move freely and stay focused Sweat resistant with smart control buttons and a no-slip grip for changing volume, switching tracks and making hands-free calls Dual-driver acoustics serve a wide range of frequency with crisp highs and powerful lows to inspire you through your workout Rechargeable battery with 8-hours playing time gives you the power to endure to the end Only 18.5 g Lightweight, providing a comfortable and secure fit