Peculiarities1.Lightweight and comfortable to wear. 2. HIFIStereo output and high quality super bass design. 3.DesignEar-Hook,it's not easy to fall off. 4.Intelligent wire management,built-in microphone,song switch to play music. 5.Waterproof and sweat resistant,professional sports headphones. 6.Smartphone compatibility,computers, MP3, MP4and other devices with a hole3.5mm.Specifications :In ear headphones :Fasting-hook :32ΩSensitivity:120dB :20-20kHz :3.5mm stereo Color:White,Green,Black :Yes :Yes :ABS + PCDriver diameter: 10mm Cable Length: Near. 1.1m/ 3.61feet :Near. 58 * 51 * 25mm / 1.74 * 1.53 * 0.75inches 1XEarphone