Note : If the size of the earbud tips does not match the size of your ear canals or the headset is not worn properly in your ears, you may not obtain the correct sound qualities or call performance. Change the earbud tips to ones that fit more snugly in your ear | Wired in ear headphones perfect for exercising; with 3 sets of ear pads (S/M/L), Headphones stay in your ears while keeping surrounding noise out | Ergo fit Design for Perfect fit Ultra Soft Ergofit in ear earbud Headphones conform Instantly to Your ears (S/M/L ear pads Included for a Perfect fit) | Smartphone compatible Panasonic in ear Headphones with integrated microphone and remote are compatible with Apple (iphone/ iPod/ iPad), Android and Blackberry Audio devices | In ear stereo Audio tonally balanced Audio with crisp highs and deep low Notes, plus wider frequency response and lively sound quality for recorded audio | Extended Headphone cord long, 3.6 Feet cord threads comfortably through clothing and Bags making it easy to connect