I was looking for a headlight recently and realized that there is no single steam mount headlight. I have an iPhone 5 mounted on one side of the road handlebar and Forerunner 310XT - on the other. Ideally I would like to mount a headlight under the steam, but nobody seems to produce it. The place is ideal because, unlike a smartphone or a bike computer, headlight does not require attention. Why then all headlights are mounted on top?