With 15mm speakers, these earbud headphones are valued for the bass sound. Unique ergonomics design with slim cap ensure comfort fit even for earbud. Sensitive microphones and easy control for talking on your mobile phone. 15mm speaker driver optimizes wearing comfort Neodymium magnets enhance bass performance and sensitivity Slim cap earbud design for best comfort fit Bass beat vents allow air movement for better sound Integrated microphone & call button 15mm speaker driver optimizes wearing comfort Neodymium magnets enhance bass performance and sensitivity Slim cap earbud design for best comfort fit Bass beat vents allow air movement for better sound Integrated microphone & call button