These in-ear headphones use an in-line microphone to make them exceptionally easy to use with your smartphone, while an innovative ‘bass boost’ design helps them reproduce more powerful bass. The TCM55’s innovative bass boost design ensures that they fit into your ears extremely comfortably while also making sure that the headphones’ compact body can reproduce a clear, deep bass sound. The TCM55's support microphone and remote control functionality that's compatible with iPhone, BlackBerry ® and Android™ devices. This means that as well as being great for listening to music from your existing smartphone, they also let you use their mics for smartphone conversations.