Water Resistant Sweatproof Sports Headphones, Wireless Bluetooth 4.1 HD Stereo Headset, Noise Canceling Earphones with Mic, Earbuds for Running Jogging Hiking Workout Gym Exercise-Black Wireless NFC Bluetooth 4.1 with APTX technology for exceptional sound quality Rechargeable battery - up to 8 hours playtime on a single charge Waterproof - IPX7 rating with Liquipel watersafe technology. Noise cancelling Knowles silicon microphone - for clear voice communication Light weight and durable construction with ear stabilizers for secure fit.