I bought it as a second (backup) for Trail Running. It's not bad for its price, but you can't rely on it, firstly because it has very low autonomy (even though it may have discharged after an initial charge and 4 days of non-use) and its lumens don't help much either. Satisfactory on a large scale but with a short duration. We're talking about maximum performance, and in 40 minutes it had almost gone out.