Wireless Bluetooth Headphones, Wireless Earphones for Running with Mic, Noise Cancelling, Sweat Proof in red and black. ADVANCED TECHNOLOGY: Bluetooth 4.1 technology, the signal strength is nearly twice times than the general Bluetooth headset, High-fidelity stereo music and clear speech within 10 meters, you can begin enjoying CD quality stereo sound instantly. HIGH QUALITY GUARANTEE: Noise cancelling lets you enjoy a clear sound in a noisy environment. Powerful rechargeable battery provide 5 hours of Talking/Playing time. FULLY EXERCISE PROOF: Sweat-proof, earpiece design, portable and lightweight wireless earphones can stay in your ears comfortably, will let you enjoy music through a variety of activities. UNIVERSAL COMPATIBILITY : Android, IOS Smart Cell phones and Windows devices. PACKAGE CONTENT: Black and red earphones, USB charging cable, user manual and FREE sweat/waterproof pouch.