Jabra C100 Earbud Headset with 2.5mm Plug The contemporary styling of the Jabra C100 is designed to complement the design of all modern cell phones The compact, stylish design of the Jabra C100 makes it easy to use and means that it takes up no room in your pocket or bag when you're not wearing it. Headset with in-line microphone The patented Jabra EarGel fits snugly in either ear for a secure, comfortable fit and there are two wearing styles to choose from  with foam pad or with EarGel only For all phones with a standard 2.5mm headset plugs