Mpow MBH5B-PS-2 Swift Bluetooth 4.0 Wireless Sport Headphone with Running Exercise Stereo Earbuds and Built-in Mic and apt-X - Cool Black MPOW Brand Certified: Top-Brand Bluetooth Accessories for Smartphones. With bluetooth 4.0 with apt-X tech, the Swift headphones ensure high-fidelity stereo music and clear speech via Noise reduction. Strong Wireless Signal: you can enjoy skip-free music in a 10-meter working distance, even if use your music devices left/right side, above/below waist. Exercise-proof & Sweatproof design guarantee 100% Stable and Comfortable when exercising, running, climbing, driving, skating,camping, fishing and other outdoor sports. Small,medium and big size earhooks included. Universally compatible with most Bluetooth-enabled phones.And built-in extra-long battery allows up to 5-hour talking/playing time and 185-hour standby.