Good lamp, but for running / jogging unsuitable.

For the low price you can probably not expect too much, but the light output is not sufficient for some activities.
For walking or jogging in the winter evenings, the performance is sufficient in my view, definitely not.

The build quality is very good, but what good is that if the light does not shine bright enough?

A few meters in front of him can be leveled in an area with a diameter of about 2 meters, although recognize reasonably, but really have to very focused in order to detect the height profile reasonably can - and that is when running on forest or field paths or equivalent very important not to rush.

For other activities than running the light may be sufficient, but I have to wonder here but very good reviews.
Apparently, many have not yet had a high forehead lamp in her hand.

So I can go running in the darker season safe and relaxed, I have now bought the Mammut Lucido TXlite which is at a twice the price is many times better and brighter.
Instead of a beam length of 15 meters, the mammoth up to 41m and a light output of 60 lumens - enough for all applications and so I am very satisfied.

From Sigma Headlamp I would basically discourage unless they only want to use to read or similar activities, in a high light intensity is not required.