RemixIconEx.Media.notification_4

You're seeing just the function notification_4, go back to RemixIconEx.Media module for more information.
Link to this function

notification_4(icon_css_class \\ "icon")

iex> Elixir.RemixIconEx.Media.notification_4()
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">
  <path d="M18 10a6 6 0 1 0-12 0v8h12v-8zm2 8.667l.4.533a.5.5 0 0 1-.4.8H4a.5.5 0 0 1-.4-.8l.4-.533V10a8 8 0 1 1 16 0v8.667zM9.5 21h5a2.5 2.5 0 1 1-5 0z" />
</svg>

example usage

svg.icon {
  width: 96;
  height: 96;
}