Now, wanting to listen to music or needing to make a call won't be valid excuses for not exercising, thanks to the GoFit running headphones! These are comfortable and practical sports headphones that adapt to the ear fully for a complete hold. Special European design for use while doing exercising. High-quality materials and sound. Includes a small fabric cover for storing the headphones. Characteristics: Flexible and water resistantSound: stereoAudio connection: 3.5 mm jack cableBuilt-in microphoneButton to answer and end callsFrequency response: 20-20000 HzSound level: 93 dBSpeaker impedance: 32 ΩSuitable for use with iPhones, smartphones and other mobiles. ;